| Achievement | How to Unlock |
| Death is Only The Beginning | Die 20 times. |
| Zombie Zealot | You must destroy the horde. |
| Beginning | Complete Level 1. |
| Delusions | Complete Level 2. |
| Cave | Complete Level 3. |
| Memorial | Complete Level 4. |
| Death | Complete Level 5. |
| Salvation | Complete Level 6. |
| Wonder | Complete Level 7. |
| Forward | Complete Level 8. |
| The Truth | Discover the secret. |
| Watermelon Madman | Destroy a melon. |
| Patient | Kill a Past Patient. |
| Mortimer | Do not do it. |
| Clarity | Complete Level 9. |
| Crux | Complete Level 10. |
