Guardian of Paradise/YMMV

Game Breaker: Kirin's second Spirit Power is not only multi-hit, it stuns whatever enemies it comes in contact with, requires only one Mana point, and can hit a single enemy as many as four times. To top it all off, Kirin's initial Spirit Power lets Tela jump over most attacks and even entire enemies.
- Leo's initial ability, a fireball, is single-hit and takes a moment to recharge, but it has a greater distance than your sword, and doesn't require any Mana.
- They're not quite game breakers mainly because you sometimes have to go to great lengths to find enemies of your element of choice, and you almost always need an ever-changing required element to do stuff.
Scrappy Level
- The Block Puzzle with the four ice blocks. (Hint: One block serves to put other blocks into position twice. Another block serves to put a third block into position, and also serves to position the aforementioned positioning block itself once.)
- The room with the fans.
  - Getting the heart container in the room with the fans. Save before you attempt it.
- The room next to that, with the four enemies that shoot homing orbs. Hope you had yellow mana left to deal with them two at a time. If not, good luck jumping over, whacking them repeatedly, and NOT falling off. If you fall off, you'll have to do it all over again.
  - Ran out of yellow mana? Go do the fans room again. Or hopefully you saved and can just repeatedly fall into the pit until you get a game over so you can reload with more yellow mana.