| Achievement | How to unlock
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| Demons, The Bane Of My Existence ( 20 points ) | Locate and collect all of the Demon Babies.
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| Dirty Leg Draggers... ( 10 points ) | Kill 300 Zombies.
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| Embrace Diversity ( 25 points ) | Complete the game in an Xbox LIVE multiplayer session.
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| It's the Collector! ( 20 points ) | Collect all the projectiles.
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| Keep These Bad Boys Comin’ ( 15 points ) | Rack up a 20 score multiplier.
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| My New Favorite Number ( 15 points ) | Defeat 50 enemies in a row without getting hit.
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| No Loitering! ( 10 points ) | Kill 5000 Demons.
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| Put Your Cheeks Into It! ( 10 points ) | Kill 1000 Manbirds.
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| Repeat, Repeat, Repeat ( 10 points ) | Use any special attack 100 times.
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| See You In Hell ( 25 points ) | Complete the game using any character.
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| Wakey, Wakey, Eggs and Bakey! ( 10 points ) | Resuscitate 50 allies.
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| We Don't Need No Magic! ( 30 points ) | Complete all levels without using special attacks
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