1917 - The Alien Invasion Achievements Here is the full list of all 21 1917 - The Alien Invasion 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 CheckmateKill the first Boss Rocket Science To HellKill the second Boss Babylon Will FallKill the third Boss Irrational LoveKill the fourth Boss Headless MonarchKill the fith Boss No One Can Stop MePlaythrough with less than 100 deaths Beezlebub WarriorPlaythrough with less than 50 deaths On The Road Of HeroesPlaythrough with less than 25 deaths Beezlebub HeroPlaythrough with less than 10 deaths 1CC Without A CoinPlaythrough without death. Become a true Bullet Hell Legend Now The Whole GameGet a 360 Combo In The Name Of SatanGet a 666 Combo Insane!!!Get a 1000 Combo Combo King!Get a 1500 Combo BraindeadKill the sixth Boss Hail To His MajestyKill the seventh Boss The EndKill the true final Boss Griesgramsche LuftschraubeUnlock the "Luftschraube" SturmDeckerBeat the game and unlock the Hard Mode FleischDecker - FleshplaneBeat the complete game with the "SturmDecker" (In one sitting) Master Of Applied MasochismBeat the complete game with the "FleischDecker" (in one sitting)