| Achievement | How to unlock
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| 101 Spikes | Trigger spike traps 101 times.
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| Bad Touches | Get grabbed by Blue Devil three times.
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| Bat Marm | Never harm little bats! Ever!
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| Beat Big Bat | You bested Big Bat! Have you ever seen a bat so big?
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| Beat Blue Devil | You bested Blue Devil! Necessity is the moth of invention.
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| Beat Chainsaw Megamaniac | You bested Chainsaw Megamaniac! There's no chainsaw maniac tougher than this one.
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| Beat Eyeskuller | You bested Eyeskuller! Eye spy with my little eye something that's about to explode!
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| Beat Green Hydra | You bested Green Hydra! Two heads are better than none, but that won't slow us down.
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| Beat Manleech | You bested Manleech! Say your lamprey-ers!
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| Beat Red Devil | You bested Red Devil! Yow, it's hot in here!
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| Bulletproof Pumpkin | Beat a world without taking a hit.
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| Chainsaw Dance | Make Chainsaw Megamaniac leave his chainsaw behind when he dies.
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| Crow No... | Run away from a crow for a very long time.
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| Hardcore Gourd | Beat the game with 1 HP Mode enabled! HARDCORE!!!
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| Killed By Death | Destroy five hanging skeletons before they hit the ground.
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| Let Sleeping Frogs Lie | Wake up 6 sleepy frogs.
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| Ooze It or Lose It | Watch Manleech vomit 10 times. Yucky!
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| Secret Seeker | Destroy a breakable wall.
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| Spider Inciter | Knock five spiders off the wall.
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| Win the game as Pumpkin Man | You won as Pumpkin Man! Get pumped!
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