| Achievement | How to unlock
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| 99 Problems and a Zombie Ain't One (50 points) | Reach a combo of 99 kills in any mode.
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| A Survivor is Born (100 points) | Reach wave 10 in Survivor Mode.
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| Airborne Appendages (50 points) | Get 20 projectile kills in a single stage.
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| Blistered Feet (100 points) | Complete Marathon mode.
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| Bow to me (200 points) | Attain 5 stars on all story stages.
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| Can't Touch This (50 points) | Finish a stage without taking any damage.
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| Flying Blind (50 points) | Finish a stage with the crosshair off.
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| Half Marathon (100 points) | Reach Stage 2-5 in Marathon Mode.
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| Insert Coin (50 points) | Complete your first level.
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| No cat left behind (100 points) | Complete the final stage and story mode.
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| On Rails (50 points) | Finish a stage without ever changing lanes.
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| Pacifist (50 points) | Finish a stage without killing a single enemy.
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| Pound Cake (50 points) | Kill 10 enemies with one sledgehammer power-up.
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