Ninety Days Achievements Here is the full list of all 7 Ninety Days 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 Win!Complete the game First decadeHold the defense for 10 days Fifth decadeHold the defense for 50 days 3 terrible monthsHold the defense for 90 days Humble princeCollect 100 coins The Rich KingCollect 1000 coins Weapon potentialUpgrade tower