← SAS: Zombie Assault 4

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• Map Champion - RecoverySuccessfully complete Recovery 100 times0.6%Ultra rare
• Vehicular ManslaughterSquish 5,000 zombies while driving a vehicle0.7%Ultra rare
• Map Master OnslaughtSuccessfully defend the ship 1,000 times1.1%Very rare
• Map Master Power OutSuccessfully complete Power Out 1,000 times1.1%Very rare
• Map Master - SurvivorsSurvive Survivors 1,000 times1.1%Very rare
• Map Master - VIPSuccessfully escort the whiny VIP 1,000 times1.1%Very rare
• Map Master - VaccineSuccessfully extract the vaccine 1,000 times1.1%Very rare
• Map Master Last StandMake 1,000 successful stands1.1%Very rare
• Map Master - PodsSuccessfully defeat the pods 1,000 times1.2%Very rare
• Zombies Go BoomVaporize 10,000 zombies with the Aerial Bombardment skill (Heavy Class)1.3%Very rare
• Team SprintComplete Vaccine with a 4 player team where you extract the vaccine and get all 4 players on the ship in less than 5 minutes1.4%Very rare
• Most Toys WinsOpen 10,000 Strongboxes1.4%Very rare
• RegeneratorApply 25 total skill points on a single character between Health Regen and Energy Regen (at least 5 points in each)1.5%Very rare
• FiremanExtinguish 1,000 Wickers1.5%Very rare
• HurlDe-worm 1,000 Regurgitators1.5%Very rare
• Zombie Heal ThyselfHeal to death 10,000 zombies with the Zombie Antidote skill (Medic class)1.6%Very rare
• HackedTerminate 1,000 Zombie Mechs1.6%Very rare
• DevastationEviscerate 1,000 Devastators1.6%Very rare
• Eco WarriorComplete Recovery without ever entering a vehicle1.7%Very rare
• Armor SpecialistMake a total of 1,000 augmentations across all armor pieces1.7%Very rare

Data from Steam — Steam Web API Terms of Use. Last updated 22 Aug 2026.