| Achievement | How to unlock
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| - Escape the second facility.
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| - Defeat the Fatcat without taking damage.
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| - Escape the first facility with Ingester.
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| - Crush 15 enemies beneath Ingester's bones.
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| - Destroy 500 computers total.
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| - Destroy 1000 doors total.
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| - Escape the first facility with Gorger.
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| - Start a Challenge Mode run.
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| - Defeat the General without taking damage.
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| - Ascend 1000 meters total in elevators.
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| - Ascend 5000 meters total in elevators.
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| - Escape the first facility with Nibbler.
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| - Melt 10 enemies with Gorger's acid.
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| - Ascend 10000 meters total in elevators.
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| - Ascend 2500 meters total in elevators.
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| - Kill 20 enemies in a single bloodlust as Devourer.
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| - Defeat the Specialist without taking damage.
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| - Escape the first facility with Devourer.
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| - Destroy 100 vehicles total.
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| - Unlock all 50 Adaptations.
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| - Escape the first facility with Eater.
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| - Defeat the Hybrid without taking damage.
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| - Escape the first facility in under 14 minutes.
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| - Eat 3 enemies stunned by one use of Nibbler's teleport.
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| - Emerge from Eater's shadow form beneath 5 enemies.
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| - Escape the first facility in under 17 minutes.
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| - Defeat the Machine without taking damage.
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| - Destroy 5 rockets with Chomper's shockwave.
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| - Escape the third facility.
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| - Escape the first facility with Chomper.
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| - Escape the first facility with each of the six monsters.
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| - Spill 1000 gallons of water total.
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| - Escape the first facility in Challenge Mode.
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