| Achievement | How to unlock
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|---|
| Beast Master | Kill the Gorgamesh.
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| Blood & Guts | Kill 20 non-boss enemies with the shotgun.
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| Bloody Murder | Kill any boss with the shotgun.
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| Brain Biter | Kill 15 non-boss enemies using the sledge hammer.
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| Breaking & Entering | Broke all the breakable doors.
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| Death Miner | Kill 5 non-boss enemies with dynamite.
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| Demon Slayer | Kill the Gnaw.
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| Firing Squad | Kill a boss with the rifle.
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| First Blood! | Killed your first enemy.
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| Giant Killer | Kill the Collosus.
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| Home Run | Kill 10 flying enemies using the sledge hammer.
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| Mass Shooter | Kill 20 non-boss enemies with the rifle.
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| Masscre | Kill 10 non-boss enemies with the bone saw.
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| Nailed | Kill a boss with the nail gun.
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| Napalm in the morning | Kill 10 non-boss enemies with the flame thrower.
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| Pinups | Kill 12 non-boss enemies with the nail gun.
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| Postal worker | Kill 25 non-boss enemies with the pistol.
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| Prison Break | Complete Chapter 1 using only the shank.
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| Self Defence | Kill a boss with the pistol.
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| Skull Crusher | Kill any Boss with the sledge hammer.
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| Slasher | Kill 50 non-boss enemies with the shank.
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| Witch Hunter | Kill the Wendigo.
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| Worm Crusher | Kill the malatesta.
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