| Achievement | How to unlock
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|---|
| Asylum | Beat the game on Hard difficulty setting.
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| Chain Reaction | Kill 3 Ashes with the chain reacting explosion.
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| Clinic | Beat the game on Easy difficulty setting.
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| Dancing Loony Bin | Beat the game on InSane difficulty setting.
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| Doctor Nosy | Find all the notes in the game.
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| Fifth Encounter Finished | Finish fifth encounter.
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| First Boss Defeated | Defeat first boss.
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| Fourth Encounter Finished | Finish fourth encounter.
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| Good Listener | Listen to all recordings in the game.
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| Hack n' Slash! | Kill 50 opponents with Sickle.
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| Headhunter | Smash 50 heads with a kick to the head in the finisher.
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| Pacifier | Kill 50 opponents with 'Pacyfikator' Telescopic Baton.
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| Remote Car Champion | Move throught the vents without wasting any of the Repairbots.
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| Sanitarium | Beat the game on Normal difficulty setting.
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| Second Boss Defeated | Defeat Second Boss.
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| Second Encounter Finished | Finish second encounter.
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| Sixth Encounter Finished | Finish sixth encounter.
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| Special Treatment | "Tranquilize" 20 opponents with Syringe.
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| Third Boss Defeated | Defeat Third Boss.
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| Third Encounter Finished | Finish third encounter.
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