|Achievement||How to unlock
- A Legion of Zombies (20 points)
- Kill 500 zombies in one level.
- Witness Rachel joining the group.
- Witness Brain joining the group.
- Complete a Base quest without taking any damage.
- Kill a mutant with your fists.
- Getting to know each other (25)
- Complete all character quests or see someone else do it.
- Fully upgrade a weapon with any status effect.
- Complete 'Dev Card Hunt!' or see someone else do it.
- Thought this was a Zombie Game? (10)
- Witness Luxo joining the group.
- Complete 'Return to the Military Base'.
- Use your first Smart Bomb.