Those Left Behind Achievements Here is the full list of all 10 Those Left Behind 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 First KillIt was either you or him. 100 KillsDo you remember your first kill? 1000 KillsYour hands are red with blood 20 Kills with a HammerYou know there are faster ways to do this, right? 100 Kills with a HammerYou must enjoy this… 50 Kills with a ShotgunBoom! 200 Kills with a ShotgunBoom! Boom! Boom! Boxing is fun!You killed a tweaker with your fists. Amateur BoxerYou've killed 10 tweakers with your fists! Professional BoxerYou've killed 50 tweakers with your fists!