One-Hit Kill: Difference between revisions

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Often, the One Hit Kill isn't humble enough to just kill, instead [[Taken for Granite|petrifying]], [[Baleful Polymorph|permanently polymorphing]], or banishing its victim to the [[Phantom Zone]].
 
Usually, the One Hit Kill comes at a price. Sometimes it's a [[Dangerous Forbidden Technique]] which to use requires [[Cast From Hit Points|Casting From Hit Points]], other times it's just really hard to pull off, or leaves you wide open for a counterattack. In electronic RPGs, it's frequently a [[Useless Useful Spell]] because of low hit rates, [[Contractual Boss Immunity|inability to affect bosses]], or a prohibitive cost required to cast it, if not all three combined (Tabletop RPGs, by contrast, have a history of letting [[Linear Warriors, Quadratic Wizards|those pesky spellcasters]] make these spells insufficiently useless, turning many fights into a game of "who gets insta-killed first"). In martial arts, it frequently takes the form of the [[Touch of Death]]. If it only works at the start of a fight, it's a [[Back Stab]]. If it only works at the end of a fight, it's a [[Finishing Move]]. If ''every'' enemy attack is a one hit kill, the protagonist is a [[One-Hit-Point Wonder]].
 
In [[Anime]], expect to hear the phrase "ichigeki hissatsu!" (literally, "One Hit [[Tempting Fate|Certain]] Kill") thrown around when [[Calling Your Attacks|invoking this sort of attack]]. With bladed weapons, cinematic representation of this trope often becomes a [[Single -Stroke Battle]]. See also [[Chunky Salsa Rule]]. Often a [[Death or Glory Attack]]. Compare [[Coup De Grace]].
 
{{examples}}
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* Balefire in ''[[The Wheel of Time (Literature)|The Wheel of Time]]'' instantly erases from existence anyone it hits retroactively. And it kills in such a way that even the Dark One (who has power over death and can reincarnate people) can't save them.
** Balefire comes at a very high price, though. Since it kills retroactively, the past will be changed - any actions performed by the killed within for everything for a minute back to days (all according to the power of the Balefire) will now not have happened. If this happens to much, reality itself unravels, causing a ''[[Temporal Paradox]]'' that can destroy the world.
* The [[Hive Queen|Vord Queen]] in ''[[Codex Alera (Literature)|Codex Alera]]'' has become powerful enough by First Lord's Fury that, when an [[World of Badass|Aleran]] [[Authority Equals Asskicking|High Lord]] [[Big Damn Heroes|takes the field at the battle of Alera Imperia]], [[Negated Moment of Awesome|she blasts him out of the sky with one hit]]. ''When he's protected by dozens of Citizens and knights.'' Cue the [[Mass "Oh Crap"]].
* The demon-in-the-form-of-a-sword "Stormbringer" in [[Michael Moorcock]]'s ''[[The Elric Saga|Elric of Melnibone]]'' series kills any non-magically protected human in one blow (it also eats the victim's soul). "Mournblade" is a similar demonic sword, and one story reveals that there is an entire race of these demons -- all of them taking the form of swords.
* "Morganti" weapons in ''[[Dragaera]]'' are all one-hit killers. They also destroy the soul of the victim, making revivification impossible, and also making it impossible for the victim to travel the Paths of The Dead to the afterworld.
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** '''Power Word: Kill''' -- 9th-level arcane spell; kills you without a save if you're at 100 HP or less.
*** Because not all of the "save or die" spells target Fortitude (some target Reflex or Will), a high level wizard is a [[Game Breaker]], as he may kill nearly anything by guessing which save is the weakest.
**** Thus, [[Linear Warriors, Quadratic Wizards]]. Of course, the one problem is that he has to prepare those spells hours beforehand, so needs to either have a pretty good idea of what enemies he will face, or else [[Crazy Prepared|prepare some insta-death for every kind of enemy he can think of]].
** '''Destruction''' -- 7th-level divine spell; similar to ''finger of death,'' but it destroys the foe's body on a failed save (making resurrection more difficult) and inflicts more damage on a successful save. Damn [[Game Breaker|CoDzilla]].
** '''Blasphemy''', '''Holy Word''', '''Word of Chaos''', and '''Dictum''' are all alignment-based spells that brutalize targets of the other alignment with negative status effects. However, if you are a certain number of Hit Dice (a measure of hit points) below the caster, you just drop dead, no save. Most of the game's most famous antagonists (The various Archfiends, for example) have these abilities ''built in''.
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* If you roll a 01 in combat in ''[[Unknown Armies (Tabletop Game)|Unknown Armies]]'' you automatically kill your target (or knock him out, if you so choose.)
* ''[[Monopoly (Tabletop Game)|Monopoly]]'': If you land on Boardwalk when your opponent owns it and Park Place, and has put a hotel there, you could be bankrupted and lose the game in one turn.
* In ''[[Deadlands (Tabletop Game)|Deadlands]]'', if you cast [[Magic Missile|Soul Blast]] and draw a [[Dead MansMan's Hand]], you automatically kill your target.
 
 
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** In the [[Spiritual Successor]], ''[[Blaz Blue (Video Game)|Blaz Blue]]'', Instant Kills have been replaced by Astral Heats, which seem to have been excessively [[Nerf|nerfed]]. They can only be used in a tiebreaking final round of a match, require 100% of your super bar, and ''can only be used when the opponent is below 25%'', at which point any normal super move would likely win anyway. After all, [[There Is No Kill Like Overkill]].
*** ''Continuum Shift'' seems to have un-nerfed them. You can now use them in round 2 of 3 if it would win the match for you, and your opponent can be at or below 35% health.
* In ''[[Dwarf Fortress (Video Game)|Dwarf Fortress]]'', any hit that results in a bisection is always lethal, as well as immersing a creature in liquid and then freezing the liquid (magma into obsidian or water into ice), or [[Rocks Fall, Everyone Dies|caving walls or floors in on an enemy]]. Other favourite, but less reliable kinds of istant death are magma (although some creatures are immune to it), [[Dropped a Bridge On Him|dropping bridges on the enemy]] (except for the biggest creatures), and decapitation or piercing the brain with a weapon or shattered piece of skull (as long as the target isn't undead and has only one functioning head left).
** Some forms of evil weather, such as the ones found in [[Waterburned]], are instantaneously fatal to dwarves.
* One of the starting weapons in [http://colourfire.nfshost.com ColourFire]'s arcade mode is a virus that infects enemies and kills them in one hit, blowing up into even more viruses. The only trouble is its short range, and that it has to wear down their health from the inside before they die.
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** The final boss of Lunar 1 also used that spell (Fate Storm), but unlike in ''Lunar 2'', in ''Lunar 1'' it just killed the target outright. Particularly bad because the boss in question could doublecast, and would always cast Fate Storm along with Hell Wave, a powerful attack-all spell that could easily leave you in critical condition. So you had to revive the dead person AND restore your entire party, unless you learned the pattern and prepared for it beforehand.
** The final boss of the PSP remake of ''[[Lunar the Silver Star|Lunar 1]]'' punishes the player for abusing Mist Barrier by casting a spell that makes his next spell deal 2,000 HP to the entire party on the last turn it's active.
* ''[[Golden Eye 1997 (Video Game)|Golden Eye 1997]]'' features the Golden Gun weapon, hindered by its one bullet magazine and that it only does enough damage to deplete either armor or health. There is also the cheat but equally devastating Gold <s>Walther PPK</s> [[AKA -47|PP7]], which can kill ''anything'' in one shot, and has a 7 round magazine.
* The Sky Canyon boss in ''[[Sonic Advance Trilogy (Video Game)|Sonic Advance 2]]'' has a hand-swat attack that will end you regardless of whether or not you have rings or a shield.
** Some bosses in ''[[Sonic Rush Series (Video Game)|Sonic Rush Series]]'' have a one hit kill attack, too, but Eggman's generous enough to give you an audio cue ("Get ready to be schooled!").
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* ''[[Call of Duty (Video Game)|Call of Duty]] 4'' and beyond add a knife that is an instant kill if it connects. Bashing people with your gun in earlier games was also generally instant death, unless you did it with a pistol.
* Since we are on the topic of ''[[Unreal Tournament (Video Game)|Unreal Tournament]]'', some incarnations of it include the InstaGib mod, which gives all players Shock Rifles with nearly unlimited ammo and each hit is lethal. This mode was available in ''[[Quake III Arena (Video Game)|Quake III Arena]]'', too, but with railguns.
* The knife in ''[[Battlefield (Video Game)|Battlefield]]'' series (aside from ''[[Battlefield Heroes]]'' and, depending on how you use it, in ''[[Battlefield 3 (Video Game)|Battlefield 3]]'') is a short-ranged weapon which kills all infantry in one strike. [[Boom! Headshot!]] works also.
** Sort of with the headshots. Sniper Rifles would always be a one hit kill, and shotguns were a one hit kill in the head at close range(along with any other part of the body) but other small arms would just deal more damage than normal.
** The RPGs in 2 and 2142 were one of the few weapons that would result in the victim not able to be revived by a medic, regardless on where they were hit.
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** Shinobu has a '''pair''' of near instant-death attacks after she [[Turns Red]]: she can take you from full health to ''two points'' with her supercharged Gengoken attack, and her multi-Sonic Sword attack will off you if she hits you with all the blades. And she is the third boss of the game.
** Harvey Moisewitch Volodarskii and Bad Girl also have instant-death attacks, the former if you fail to break out of his magic box, and the latter if you fall for her trap. {{spoiler|Henry breaks one out once his health reaches [[Turns Red]] territory; it's the one that looks like the Stinger from ''[[Devil May Cry]]'' and '''plants you into the concrete'''.}}
** Surprisingly, there are fewer one-hit kills in [[No More Heroes 2: Desperate Struggle (Video Game)|the sequel]], but they're noteworthy: {{spoiler|Captain Vladimir's extended [[Kill Sat]] laser and the final boss' violent defenestration attack}}. More frustrating is the final boss' attack, though, who is more or less a checklist of [[The Computer Is a Cheating Bastard]], with teleporting, chaining attacks, ranged attacks, multiple forms, and possibly most frustrating, a OHKO that really can be ANY move, so long as you're on a specific third of the stage (or, if the attack is too strong, almost ''anywhere'').
** Travis gains another OHK in the sequel: turning into a tiger and ripping apart the suddenly-terrified enemies.
* The "game ender", a unit or structure that can only be built at or near the end of the tech tree, and even then only at considerable time and expense, but once built, (almost) uncounterably devastates your opponent, is a staple of [[Real Time Strategy|RTSes]]. [[Nuke'Em|Nuclear]] warheads are popular, but a recent trend is to include a mobile unit with a short to medium ranged weapon that can one-shot ''anything''.
* The Spy's [[Butterfly Knife|butterfly knife]] in ''[[Team Fortress 2 (Video Game)|Team Fortress 2]]'' is a guaranteed one-hit kill [[Back Stab|if you can attack the enemy from behind]]. The base damage is twice the victim's health, [[No Kill Like Overkill|multiplied by three for a Critical Hit]]. The attack is based on which part of his foe the Spy is aiming at, [[Hitbox Dissonance|not where's he's actually standing]] (this is particularly infuriating when server lag lets enemy Spies Backstab you ''in the face'').
** And the Sniper's [[Boom! Headshot!|headshot]] ability, when fully charged, inflicts 450 damage, exactly enough to kill an over-healed Heavy and (way) more than enough to kill anyone else.
** On a technical level, only telefrags and falling into pits are One Hit Kills. However, the examples noted deal up to 500 damage without any modifiers and boil down to One Hit Kills except against a Spy using a the Dead Ringer or a Heavy affected by a stun during the time it gave victims a 50% damage reduction to make it less overpowered.
** Sawblades, trains, and the Horseless Headless Horsemann deal damage equal to double your current health.
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* ''[[The Legend of Zelda (Franchise)|The Legend of Zelda]]'' examples:
** The boomerang from ''[[The Legend of Zelda Links Awakening (Video Game)|Link's Awakening]]'', which you have to trade in your shovel for, can kill the final boss in a single hit if you aim for the eye. In the same game, stealing a product on a shop and coming back will show the owner zapping Link to death due to the theft.
** In ''[[The Legend of Zelda the Wind Waker (Video Game)|The Wind Waker]]'', you will eventually get the Light Arrows, which are so powerful they obliterate ANY normal enemy in an explosion of light. For that matter, almost any time the Light Arrows are featured (''[[The Legend of Zelda: Ocarina of Time (Video Game)|Ocarina of Time]]'' is an exception because they only stun enemies). They OHK all normal enemies and are powerful enough to stun [[Evil Overlord|Ganondorf]], [[Names to Run Away From Really Fast|The King of Evil]].
** Link can learn two sword techniques in ''[[The Legend of Zelda: Twilight Princess (Video Game)|Twilight Princess]]'' that do this. The Mortal Draw is tricky to use, and doesn't work on certain enemies that are defended in the front ([[Back Stab|you need another sword technique entirely for them]]), but it can still be effective in certain situations. Against bosses, it won't be an instant-kill, but it will ''[[For Massive Damage|hurt like hell!]]''. The other technique is the Ending Blow, which delivers a deadly stab at enemies when they're knocked down in the floor after being attacked.
** In ''[[The Legend of Zelda Spirit Tracks (Video Game)|Spirit Tracks]]'', the Dark and Armored Trains can kill Link instantly if he fails to dodge them while travelling with the Spirit Train.
** Several examples in ''[[The Legend of Zelda: Skyward Sword (Video Game)|Skyward Sword]]'':
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* ''[[Total Overdose]]'' gives Ram a variety of [[One-Hit Kill]] options, but only the targeted headshot is worth any appreciable points. Most Loco Moves are instantly deadly in a pinch; the Tornado sprays dual uzis in 360 degrees, El Toro allows Ram to charge and headbutt enemies to death, the Explosive Pinata lures in enemies before detonating, and the Golden Gun is loaded with 4 bullets that autokill enemies in the general direction it's fired. These may seem like game breakers, but given the volume of enemies and increasing style-point requirements, their use isn't generally ideal, and mostly reserved for panic situations.
* ''[[Bunny Must Die]]'' has three bosses with instant death abilities.
** Count Vladmu a.k.a. [[Full -Frontal Assault|Flash]] has his namesake ability, signaled with flames at his feet before he parts his robe and glows brightly. If you so much as look his way during this, you either forfeit a doll (Chelsea automatically, Bunny on Recall) or head back to your last save point. Direct contact with his head by anything other than the girls' feet is also instant death.
** Chelsea, as a boss, has a mode where crosshairs lock onto you. If you stay in one spot too long, you get a headshot, which kills you no matter how much health you have.
** [[Demonic Possession|Dechronos!Bunny]] throws [[BFS|BFSes]] on the last ten to fifteen percent of her health. Touching one effectively paralyzes Chelsea while Bunny beats a doll out of her. What, don't have a doll? Say hello to the last save point, sucker! Oh, and don't touch her at this time, either.
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** The Dullahan attack called "Charon" is not exactly the same attack as the summon called "Charon". They have the same attack animation and damage calculation, [[The Computer Is a Cheating Bastard|but the Dullahan attack has a higher chance of OHKO.]]
** Menardi and Karst have the [[Sinister Scythe|Death Scythe]] attack, which can do this. The Ice Queen's [[Kiss of Death|Icy Kiss]] attack can also oneshot someone in ''Dark Dawn'', a bit of a wake-up call due to the lower level at which you encounter her. {{spoiler|[[Demonic Spiders|Skorpna-type monsters]] in the Grave Eclipse have a OHKO move called Drag Down.}}
* ''[[Touhou (Video Game)|Touhou]]'' features several superpowers like this. [[Enfant Terrible]] Flandre can disintegrate objects at range with no visible weapon by targeting their "weak point", [[Cute Ghost Girl]] Yuyuko can kill with a thought, Keine and Yukari can [[Ret -Gone]] you with their superpowers, you can fight [[Don't Fear the Reaper|the not-so-grim reaper Komachi]], [[Cute Monster Girl]] Yamame, who can inflict every disease ever known on you at once, etc. Isn't it a good thing [[Thou Shalt Not Kill|the Spellcard System prevents]] [[Killed Off for Real|"real" deaths]]?
** ''Hisoutensoku'' has Reimu's Fantasy Heaven, which is so strong that if you use it in the third round of a match, [[Theme Music Power-Up|it gets its very own theme music]]. The move is one big [[Shout -Out]] to the Hokuto no Ken example above; the theme music that plays in the third round version is [[The Jimmy Hart Version]] of the Fatal KO theme from the HnK fighting game, and the move is called "Musou Tensei" in Japanese, which is also the name of Hokuto Shinken's ultimate technique.
** The side story manga also contain this. In one of the early chapters of ''Inaba Of The Moon, Inaba Of The Earth'', Tewi goes for the phrase [[Calling Your Attacks|"One Hit Kill"]] brandishing [[Drop the Hammer|a giant mallet]] [[Mundane Made Awesome|in order to make mochi.]] (She coincidentally also smashes [[Butt Monkey|Reisen's]] fingers.)
* Occasionally in ''[[Dissidia Final Fantasy (Video Game)|Dissidia Final Fantasy]]'', you will encounter gold manikins that have exactly one HP. Hitting one of them with an HP-damaging attack at any point in the match will result in instant victory. However, early on in the game, some of them will also have insanely high Bravery levels, meaning they can do this to you, as well.
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** Some boss abilities are basically avoidable [[One-Hit Kill|One Hit Kills]]. Avoiding might mean to acquire an effect that protects against a good chunk of the damage, running behind line of sight obstacles, interrupting the spell or simply running away whenever it comes up. Tanks may or may not be tough enough to survive it regardless, but everyone else has to avoid it anyway. Some bosses even go as far as coupling this with getting stronger when they kill someone with such a spell.
*** Bloodlord Mandokir in the updated Zul'Gurub dungeon has [[Off With His Head|Decapitate]], which deals around '''15 million''' damage to the target. It is unavoidable, and without a special ability like [[Not Quite Dead|Cheat Death]], it will one-shot anyone it hits. Fortunately, in this encounter [[Death Is Cheap|death is even cheaper than usual in World of Warcraft]].
** Additionally, it has become a standard tactic for any player that has a displacement/knockback effect (Elemental Shamans, Balance Druids, Fire Mages, and any particularly skilled Death Knight) to allow in their [[Pv PPvP]] strategy a means to place their opponent between them and a high cliff, causing instant death to anyone that doesn't have a means of slowing their descent (Mages/Priests respective 'Slow Fall' and 'Levitate' assuming they aren't an engineer with a parachute).
*** You can also survive being thrown off a cliff with Warlock's 'Demonic Circle', altho it requires good timing.
** The Warriors Execute skill (and similar skills) is meant to be this, although usable only if the enemy is already at low health. Normal opponents and players will die (barring damage-preventing effects like the Cheat Death talent), but against a raid boss it ''only'' deals heavy damage.
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** In the third installment, there is the aptly named "One-Shot." Hit an enemy anywhere and he turns into chunky salsa.
* The Widow sniper rifle in ''[[Mass Effect 2 (Video Game)|Mass Effect 2]]'', with enough upgrades, leveling up, and the right armor, can regularly do this to most enemies as an Infiltrator Shepard, even being able to kill [[Elite Mook|Harbinger]] in one hit.
{{quote| '''Harbinger''': '''ASSUMING DIRECT CONT'''--* [[Boom! Headshot!]]*}}
** Aaaaaaaaand the M-920 Cain heavy weapon, informally known as a "[[Reality Is Unrealistic|nuke launcher]]." On Insanity it will still kill most enemies in one hit, in a very large blast radius, and it will probably kill you for the same reason. And it still won't do very much damage to the final boss, who (if you're really unfortunate) will be moving around too much for you to easily hit it anyway, especially considering that the final-boss area doesn't really have a whole lot of walls for you to just aim the Cain at and hope for splash damage.
** Moreover, enemies in both games still die instantly if they get knocked into areas that enemies cannot walk on (e.g., chasms). And thankfully Geth Rocket Troopers can't one-shot you on Insanity difficulty like they could in ''[[Mass Effect 1 (Video Game)|Mass Effect 1]]''.
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* In ''[[Space Invaders (Video Game)|Space Invaders]] Infinity Gene'', the Classic weapon (modeled after the cannon's design from the original game) first a [[One Bullet At a Time|single laser]] that can kill any normal [[Mooks]] and most sub-bosses with a single shot. To keep this from being a total [[Game Breaker]], the Classic cannon can never be upgraded, and is next-to-useless against the [[Final Boss]].
* In ''[[Joe Danger]]'', the horizontal red bars will violently knock you off your bike anytime you make contact with them. NO. EXCEPTIONS. It doesn't matter how many times the game's liberal application of physics have allowed you to land in ways that are physically impossible for someone on a motorbike, if even the slightest part of you touches the bar, you are sent flying. While other objects in the game will also send you flying at the slightest touch, they tend to be more noticeably dangerous; nobody expects to survive landing on a [[Spikes of Doom|spike strip]] or giant mouse trap.
** Other objects in the game are randomly given the same instant death property as the horizontal bars, but they exist in hard to reach areas as [[Insurmountable Waist -Height Fence|Insurmountable Waist Height Fences]].
* [[Fragile Speedster|Assassins]] from [[Monday Night Combat]] have some rather ''nasty'' [[Back Stab]] techniques with their bladed weapons. It's not strictly speaking a [[One-Hit Kill]], but the target's still helpless to do anything about it.
* ''[[Puzzle Quest (Video Game)|Puzzle Quest]] 2'': Two boss enemies ([[Bonus Boss|The Yeti]] and the Iron Giant<ref>[[The Iron Giant|not that one]]</ref>) have Crushing Kill, which deals 999 damage (more HP than all but the most dedicated level grinder will have). The final boss has Subjugation, which makes the player instantly surrender the fight, winning or losing.
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** Also in the first game, but in the last level, the titular characters play a quiz game. Failing to answer a question on the green-eyed skull tiles will send them to the lava automatically, and they will die.
** In ''Banjo-Tooie'', the sequel, the characters are crushed by a ton of iron if they lose during any of the three rounds of the Tower of Tragedy minigame.
* In ''[[Conkers Bad Fur Day (Video Game)|Conkers Bad Fur Day]]'', some hazards and boss attacks are deadly if the titular character isn't equipped with something (i.e. being inside a tank or having a space suit). The propellers in the passage leading to the Uga Buga level, the rotating chainsaw from the Experiment, and the {{spoiler|tail slash from the Alien}} are signature examples. The silver gun's shots, any [[Boom! Headshot!]] hit, the chainsaw, and the katana blade all have this effect in multiplayer as well. The bazooka is this in both multi and story modes.
* ''[[Donkey Kong Country (Video Game)|Donkey Kong Country]]'':
** In ''[[Donkey Kong Country Returns (Video Game)|Donkey Kong Country Returns]]'', there are certain attacks and obstacles that will kill the characters upon contact, including the spider swarm near the end of World 5, a mask-drawn flaming wheel in World 6 and, of course, [[One-Hit-Point Wonder|everything while riding on a rocket barret or a mine cart]].
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* Melee Warriors in ''[[Dragon Age (Video Game)|Dragon Age]]: Awakening'' can learn a move called "Peon's Plight", which is an instant kill against generic [[Mook|mooks]], does a double [[Critical Hit]] against elites, and a normal critical against bosses. ''Very'' useful for thinning out the herd, and an absurdly easy way to get the "Heavy Hitter" achievement (main character does 250+ damage with one attack).
* Aside from plain old [[Bottomless Pits]] and lava, ''[[The Smurfs]]'' on the SNES had three: [[Zombie Apocalypse|The local equivalent of zombification]], the rotating [[Bridge Logic|tree bridge]]<ref>If it rotates under you, you're dead before you reach the bottomless pit underneath</ref>, and [[Collision Damage]] with [[Final Boss|Gargamel]].
* The LBX/20 [[Short -Range Shotgun|shotgun]] in ''[[Mechwarrior]] Living Legends'' will one-hit-kill any jet fighter in the game if enough of its pellets hit the plane. The [[BFG|Long Tom Artillery Piece]], carried by only one unit in the game, will one-hit-kill anything lighter than 50 tons with a direct hit, and near-misses will kill light mechs and hovercraft. While the LBX is horrendously effective versus other targets, the Long Tom suffers from a ''massive'' minimum range <ref>unless the artillery tank is parked on a hill, it cannot aim low enough to hit anything within a hundred meters</ref>, a painfully slow reload time, a pathetically slow engine, and a total lack of [[Point Defenseless|support weapons]].
 
 
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* It is entirely possible to kill or knock out a person instantly with a single surprisingly gentle blow. However, beyond accidental cases there is [http://www.straightdope.com/columns/040521.html little evidence for the existence of a reliable martial technique].
** It is not a ''per se'' kill, but the pain from a good hit can be enough to leave an un(der)conditioned novice brawler hurting too bad to continue fighting even if he is not outright knocked out.
** There is ''possibly'' a phenomenon where the right type of blow can produce [http://en.[wikipedia.org/wiki/Hydrostatic_shock:Hydrostatic shock|hydrostatic shock,]] however the jury's still out on whether or not its real.
** Martial arts mysticism aside, chances of an instant knockout are significant if any highly trained fighter is given a reason to go all out against an opponent with little or no conditioning. Even if the attacker has no training, (un)lucky hits can lethally aggravate a pre-existing condition (aneurysms are particularly infamous) and kill in short order.
** It is very possible, if very rare, to cause someone to go into fibrillation (heart beating so rapidly and without any rhythm, such that it doesn't actually pump any blood) simply from hitting them in the right place, with the right force, at the right point of a heartbeat. It doesn't even have to be a hard hit. It is unfortunately common in athletes. One minute they're active, then they get what seems to be a hard bump to the chest, and then they're down and out.
*** Of course, CPR and defibrillation, as well as quick medical treatment has a chance of bringing them back. But for all intents and purposes, until their heart beat goes back to normal, they are dead.
* [[Boom! Headshot!]].
** If you want to get technical, a shot to the heart, head, or vital organ will kill. Over time in any case.
* Most weapons, on the other hand, can easily kill with a single hit. That's what they're for.
** [[Instant Death Bullet|But not always instantly, however.]]
* ''Nuclear weapons''. If using a nuke on someone isn't a one hit kill, I really don't know what is.
** [http://en.[wikipedia.org/wiki/Tsutomu_Yamaguchi:Tsutomu Yamaguchi|Tsutomu Yamaguchi survived two of 'em.]] He died much, much, much later of stomach cancer.
*** The weapon wasn't used on ''him'', though. It was used on a couple of nearby localities and he just happened to have the "good luck" to survive. If ''he'' had been the target of a nuclear weapon, and his location known and the bomb dropped right on his head, the U.S. Air Force would have certainly claimed victory.
**** Hell, if you're dropping something the size of Fat Man or Little Boy directly onto somebody's head from the height of an airplane, it doesn't even have to explode to kill them. Hitting that small a target is another story, but if you ''can'' hit, the whole several hundred pounds moving at terminal velocity would probably do the trick. (The modern military actually uses inert [[Exactly What It Says On the Tin|concrete bombs]] of about the same size to [[Kinetic Weapons Are Just Better|obliterate target buildings]] with minimal damage to the surroundings.)
** Project Orion would suggest that a properly designed structure can survive hundreds of nuclear weapons.
*** They were planned to be 0.15 kilotons and the pusher plate wasn't so much as "structure" as "a huge chunk of metal with some shock absorbers behind it".
* [http://en.[wikipedia.org/wiki/Box_jellyfish:Box jellyfish|The Box Jellyfish]], the quickest-killing venomous animal known. It generally takes somewhere between 5 minutes to a second for its sting to kill. [http://www.guardian.co.uk/world/2010/apr/27/box-jellyfish-stings-australian-girl-survives Only one person is known to have survived from one].
** Box Jellyfish isn't really ''that'' bad. Many persons survive the sting every year. But the sting of ''Chironex fleckeri'' is always very painful, and if you don't get killed in the first fifteen minutes, you are likely to survive. [Though the pain is so intense you wish you were dead.] The girl in the article was lucky because she was stung in a really nasty way - she should, by all means, have died with that amount of venom.
** Of course, after living on a [[Everything Trying to Kill You|continent of death]], hopefully Australians have started to evolve just enough to survive the types of instant death their land and seas so famously have in abundance.
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** The poison dart frog poison kills even faster; Less than 3 seconds; it has to get in the blood though, so contact itself probably won't kill you.
*** Unless it's the ''Golden'' Poison Dart Frog, which can.
* In naval warfare, a well-aimed or lucky hit in the opposing ship's magazine can lead to that ship being blown up by its own ammunition. This is what basically happened to three British battlecruisers at the battle of Jutland in 1916 and to the ''HMS Hood'' in 1941. Similarly, hydrogen-filled Zeppelins in [[World War One]] were easily downed with just one burst of incendiary ammunition and a number of [[World War II]] planes were quite vulnerable to hits in their fuel tanks, most notoriously the [http://en.[wikipedia.org/wiki/Mitsubishi_G4M:Mitsubishi G4M|Mitsubishi "Betty"]] aka the "one-shot lighter" or "flying zippo".
** And even when the shot is not on the magazine, if it hits the rudder, the ship is a sitting duck, effectively destroyed. Case in point, the Bismark.
** This can also happen with torpedoes. Specifically, a magnetic (or other proximity) torpedo detonating a short distance below the keel of a vessel has the potential to "break its back". Causing the ship to split in two and [[Captain Obvious|sink relatively rapidly]].
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[[Category:Sniper Index]]
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