Action Alien: Prelude Achievements Here is the full list of all 10 Action Alien: Prelude 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 Rampage PreludeKill 500 aliens. Explosive CleaningKill 200 aliens with grenades. Big PlayerKill 10 boss aliens. Kickboxing TrainingKill 50 aliens with leg kicks. BombermanDestroy 10 parts of buildings with explosives. Glass BreakerBreak all glasses of the petrol station. CollectionUse all weapons in a single game. RefueledCollect all petrol cans. Trip of the DayComplete the game in day mode. Night OpsComplete the game in night mode.