| Achievement | How to unlock |
| Bomb Technician (25 points) | Kill yourself with an explosive device.
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| Complete Civil War (25 points) | Complete all levels in the Civil War campaign.
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| Complete Darkest of Days (100 points) | Complete all levels in the game on normal difficulty or higher.
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| Complete WW1 (25 points) | Complete all levels in the WW1 campaign.
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| Complete WW2 (25 points) | Complete all levels in the WW2 campaign.
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| Ghandi Award (100 points) | Complete a combat level without using any lethal attacks.
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| Horse Puncher (100 points) | Punch a horse in the face, killing it.
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| Pistol Upgrade (100 points) | Fully upgrade all pistol settings.
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| Rage Fists (100 points) | Kill at least 25 NPCs with your bare hands.
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| Rifle Upgrade (100 points) | Fully upgrade all rifle settings.
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| Secret Mission (75 points) | Locate and complete the secret mission at the end of the game.
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| Tethered Swimming (25 points) | Die of suffocation underwater.
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| With Chest Hair (200 points) | Complete all the levels in the game on the highest difficulty.
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