| Achievement | How to unlock
|
|---|
| BOOM! Headshot | Buy the Sniper guard.
|
| Cheap guns | Place 500 Handgun guards.
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| Cold Blooded | Freeze 200 zombies.
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| Don't Stop Firing! | Place 500 Rifle guards.
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| Door Master | Close 100 doors.
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| Endless Horde | See the Game Over screen for the first time.
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| Engineer under preassure | Repair 30 doors.
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| Fireworks | Kill 300 zombies using the explosive barrel.
|
| I am rich! | Reach 3000 supplies in one game.
|
| KABOOM! | Buy the Rocket Launcher guard.
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| Lucky | All Scientists must survive 10 waves in a row.
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| Meat Fest | Kill 100 zombies in one game.
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| Now Hiring | Place 999 Guards.
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| Pieces Everywhere! | Buy the Shotgun guard.
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| Red Paint | Kill 30 zombies in one game.
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| Rest in Pieces | Buy the Gatling gun guard.
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| Survivor | Kill 1000 zombies in one game.
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| That was close... | Survive 30 waves in a row.
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| The Beginning | Survive the first wave.
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