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Achievements
Every SAS: Zombie Assault 4 achievement, ordered by how few players in the world have unlocked it.
4 of 64 entries
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AugmentedAdd your first augment to any weapon or armor piece50.9%Common
For MeOpen 10 Strongboxes51.1%Common
CleanupSlow 5,000 zombies with the Biocleanse Bomb skill (Medic class)69.2%Common
Level UpReach level 2 with one character85.2%Common
Data from Steam — Steam Web API Terms of Use. Last updated .