Alien Slayers Achievements Here is the full list of all 23 Alien Slayers 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 Boss HunterDefeat the boss monster for the first time Boss RushDefeat 100 Bosses RecruitTraining for the first time VeteranAll training completed SurviveSurvival success for the first time First MutantUse mutation for the first time BiohazardApply mutations to all monsters in one mission BlacksmithAcquire Gen1 Combined Weapon for the first time MacGyverAcquire Gen2 Combined Weapon for the first time EngineerReach drone level 5 in one game RegularRun the game 5 or more times CollectorAcquire all drop items once in a game Quest CompleteComplete the quest for the first time AFKClear Normal difficulty without moving PaydayEarn over 5,000 gold in a one game PredatorKill 9,999 enemies in one game ArmoryHave 3 Combined weapons in one game UndyingRestores 999 armor or health in one game SurvivorSurvival success for the first time Slayer100 games played Statue Desert Ruler WarlordExpert Difficulty Cleared