| Achievement | How to unlock
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|---|
| 10 Kills | Kill 10 creatures.
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| 100 Kills | Kill 100 creatures.
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| 1000 Kills | Kill 1000 creatures.
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| 10000 Kills | Kill 10000 creatures.
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| 15000 Kills | Kill 15000 creatures.
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| 5000 Kills | Kill 5000 creatures.
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| All Weapons | Purchase all weapons in the campaign.
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| Bonus 10 | Bonus multiplier reached 10.
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| Bonus 100 | Bonus multiplier reached 100.
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| Bonus 200 | Bonus multiplier reached 200.
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| Bonus 50 | Bonus multiplier reached 50.
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| Easy | Finish all missions in easy.
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| Hard | Finish all missions in hard.
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| Hospital | Finish the map Hospital.
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| Insane | Finish all missions in insane.
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| Laboratory | Finish the map Laboratory.
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| Laboratory - Secret Entrance | Finish the map Laboratory - Secret Entrance.
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| Mall | Finish the map Mall.
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| Moneypacks | Pickup 100 moneypacks.
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| News | Find one newspaper.
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| News 12 | Find 12 different newspapers.
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| News 21 | Find all newspapers.
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| News 5 | Find five different newspapers.
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| Normal | Finish all missions in normal.
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| Police Station | Finish the map Police Station.
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| Sewer | Finish the map Sewer.
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| Still Alive! | Finish a mission in difficulty hard without being killed.
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| Suburb | Finish the map Suburb.
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| Time Limit | Finish a mission within time limit.
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