Zombies, Aliens and Guns Achievements Here is the full list of all 15 Zombies, Aliens and Guns achievements.Filter Achievement View View Image viewList view Sort by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc What are achievement flags? Click to find outApply Military BaseComplete the level "Military Base". Helicopter CrashComplete the level "Helicopter Crash". Lost CargoComplete the level "Lost Cargo". First ContactComplete the survival level "First Contact". Death RoadComplete the vehicle level "Death Road". A Very Big SurpriseComplete the boss level "A Very Big Surprise". The Sea Waves Come Once…Complete the survival level "The Sea Waves Come Once…". A Small ProblemComplete the boss level "A Small Problem". Chasing the CargoComplete the vehicle level "Chasing the Cargo". Alternative RouteComplete the survival level "Alternative Route". Forest CreeperComplete the boss level "Forest Creeper". Hangar ThreatComplete the survival level "Hangar Threat". Capturing a UFOComplete the boss level "Capturing a UFO". Onward to the TargetComplete the boss level "Onward to the Target". The Great EvilComplete the boss level "The Great Evil" and save the world.