Dredd

Dredd is a 2012 live-action movie based on the Judge Dredd comic. Stars Karl Urban as Dredd. Judge Dredd and rookie Judge Anderson go to the rarely-policed Peachtree block to investigate a triple homicide, and matters escalate from there.

Very different from the other Judge Dredd movie, which is believed to have harmed the film's profitability despite positive fan reception (notably Dredd keeps his helmet on).

Tropes used in Dredd include:

Abnormal Ammo: As with the original, Dredd makes use of a "hot-shot" round to roast a criminal without harming the hostage he'd taken, and a flare round to take out a whole floor full of criminals at once.
Action Prologue/Establishing Character Moment: The movie opens with Judge Dredd putting on his Cool Helmet and chasing, stopping and eventually killing a trio of criminals. Aside from their use of the Slo-Mo drug, they're not connected at all to the remainder of the story -- it's just our introduction to Mega-City One and its finest Judge.
After the End: Like the comics, the movie's set sometime after a nuclear war burned much of the planet save for the sprawling mega-cities.
Alliterative Name: Ma-Ma is taken from her full name, Madeline Madrigal.
Asshole Victim: Most of the ones caught in Dredd and Anderson's sights aren't innocent or really sympathetic by any means. Kay, especially.
Bad Boss: It becomes evident over the course of the film that Ma-Ma is definitely this, her underlings following her either out of fear or being just as much of a Jerkass as her.
Bloodier and Gorier: The Judge Dredd comics have never shied away from graphically depicting violence, but the movie uses the aptly-named Slo-Mo drug to spectacular effect during some of the more violent scenes.
Bottomless Magazines: Averted. Ammunition becomes an issue for both Dredd and Anderson over the course of the movie, forcing them to conserve rounds. Once the corrupt Judge Lex and his cronies are taken out however, they have little problem restocking with the ammo left behind.
But for Me It Was Tuesday: For Anderson, her dispatch in the Peachtree block is a harrowing experience that she would never forget. For Dredd, it's another drug bust.
California Doubling: Johannesburg, South Africa, is used as the basic backdrop for the American Mega-City One.
Character Development: Anderson undergoes quite the trial of fire over the course of the film. She comes of out it shaken but much more badass.
Chekhov's Gun: Literally. Early on, Dredd brings up out how the Judges' standard-issue sidearm is coded to it owner and set to blow up the limbs of anyone unauthorized to use it. Guess what happens when Kay tries just that later on.
Cool Helmet: Part of the Judges' standard uniform. Unlike the other Judge Dredd movie, Dredd keeps his helmet on at all times. (In fact, this was a promise made to fans by one of the writers during production!) Anderson explains that she often goes without it as it interferes with her psychic powers. Here's what Dredd has to say about that:

Judge Dredd: Think a bullet might interfere with them more.

Good advice. When Anderson leaves the Hall of Justice at the end of the movie, a newly-minted Judge, she's carrying her helmet.

Crapsack World: More fleshed out than the other Judge Dredd movie, complete with fitting Black Comedy. And as befitting the source material, the whole city is constantly on the brink such that the Judges can't be everywhere at once as much as they'd want to. Keep in mind as well that the wastelands outside the mega-cities are even worse.
Deuteragonist: The film, despite the title, is also as much about Anderson as it is about Dredd.
Die Hard on an X: Much of the film has Dredd and Anderson trapped in the Peachtree block.
Evil Gloating: The downfall of the corrupt Judge Lex. He has a wounded and unarmed Dredd at gunpoint, and gloats when Dredd begs him to wait, which leaves him open to get the tables turned on him.
Future Slang: We see some written slang, but everyone curses in the King's English.
From Nobody to Nightmare: Ma-Ma, who went from being a prostitute at the mercy of a drug lord into a dangerous drug lord in her own right. Dredd and Anderson are sent in to make sure she doesn't become a nightmare to the rest of Mega-City One.
Gatling Good: Eventually, Ma-Ma decides to use a minigun to rip Dredd and Anderson to shreds. It doesn't work.
Hidden Depths: Despite Dredd's strict and stoic exterior, he does find Anderson's empathetic idealism admirable.
Industrial Ghetto: Places like Peachtree are essentially this, being run-down vertical neighborhoods effectively run by various gangs. Peachtree in particular is one of the worst ones, so much so that few Judges dare venture there.
Informed Attribute: Downplayed. Mutants are mentioned as usually having glaring physical deformities. Psychics like Anderson, however, can pass for regular humans much more easily, in part by lacking said deformities.
Mind Rape: Kay tries to inflict this on Anderson when she scans him, reasoning that she's in his head. They're actually in her head, and from what we see, the experience is brutal.
Modern Stasis: Compared to the other Judge Dredd film, most fashions and firearms wouldn't look out of place in the present. Mega-City One is also shown as looking more contemporary-looking than futuristic.
No One Could Survive That: Said by a gang member after Ma-Ma deploys the gatling guns. His boss overrides him: "They're not dead 'till we find them dead. Or part of them, anyway."
Not So Different: Subverted. Throughout the film, there are scenes subtly showing how similar Dredd and Ma-Ma (and through them the Judges and their criminal foes) seem to be. However, Dredd is shown being more willing to show restraint whenever necessary and doesn't resort to killing everyone in a room until the situation calls for it.
One Man Army: When chasing the criminals during the Action Prologue:

Control: Do you need backup?
Judge Dredd: No. *revs throttle*

Reasonable Authority Figure: Dredd may be "the law", but he's not unreasonable. He only employs deadly force in the Action Prologue when the criminals run over and kill a pedestrian, and he even offers a deal when the last one takes a hostage (life without parole -- as opposed to death, which he delivers when the criminal refuses the offer). During the early moments of her evaluation, Anderson and Dredd come across a vagrant (sentence: three weeks in the iso-cubes), but she advises leaving him to focus on the murder, which Dredd agrees with, advising the vagrant "Don't be here when we get back."
Scenery Gorn: While Peachtree block isn't exactly much to look at, the ensuring devastation over the course of the film is a sight to behold.
Seen It All: Dredd, in sharp contrast to Anderson keeps his cool even in the most harrowing situations. Anderson herself gradually slides into this over the course of the plot.
Shout-Out: A piece of graffiti (seen when Dredd is being shot at with miniguns) says "Judge Minty is the Law", a nod to a fan-film.
Slice of Life: In a twisted sense, this is another day in the office for Judge Dredd.
Taking You with Me: Ma-Ma is eventually cornered by Dredd, but not before pulling her final trump card: a bomb set to blow up Peachtrees if she were to die. Dredd finds a way around that.
Tranquil Fury: Dredd's mood for much of the movie, and Anderson picks it up as well. Dredd's not one to ham it up in this movie, but he's clearly got some fire in him -- for example, in the Action Prologue, Dredd doesn't employ deadly force until the perps he's chasing run over and kill a pedestrian:

Dredd: Control. Perps just wiped out an innocent. I'm taking them down.

Wretched Hive: Mega-City One, of course. Twelve major crimes reported every minute, 17,000 per day, and the Judges can only manage to respond to six percent of them. Dredd and Anderson are the first Judges to respond to Peachtree in years.