| Achievement | How to unlock
|
|---|
| A Legion of Zombies (20 points) | Kill 500 zombies in one level.
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| Back with the X (10) | Witness Rachel joining the group.
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| Big Brain Brian (10) | Witness Brain joining the group.
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| Can't touch this (20) | Complete a Base quest without taking any damage.
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| Fists of Fury (10) | Kill a mutant with your fists.
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| Getting to know each other (25) | Complete all character quests or see someone else do it.
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| Kill a zombie (5) | Kill a zombie.
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| Master Craftsman (20) | Fully upgrade a weapon with any status effect.
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| The Collector (30) | Complete 'Dev Card Hunt!' or see someone else do it.
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| Thought this was a Zombie Game? (10) | Witness Luxo joining the group.
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| Touch Base (35) | Complete 'Return to the Military Base'.
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| Watch this! (5) | Use your first Smart Bomb.
|