Fortitude Tower Defense Achievements Here is the full list of all 11 Fortitude Tower Defense 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 Silent No MoreComplete Act 1 on any difficulty Academy In ActionComplete Act 2 on any difficulty It Is FinishedComplete Act 3 on any difficulty That's Mine NowCapture an Enemy Territory All Done HereCapture an Enemy Spawn Point Brick and MortarBuild 15 towers in a single mission Trophy CollectorObtain all 10 Relics Bigger, BetterPerform a tower conversion A Scholarly ShowingObtain 20 Knowledge in a single mission Conquering HeroWin a mission by capturing all Spawn Points Eldenmore ForevermoreComplete Act 2-3 without the Castle taking damage