U.F.O. K.O. Tower Defense Achievements Here is the full list of all 23 U.F.O. K.O. 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 3 STARS LEVEL 1PERFECT! 3 STARS LEVEL 2PERFECT! 3 STARS LEVEL 3PERFECT! 3 STARS LEVEL 4PERFECT! 3 STARS LEVEL 5PERFECT! 3 STARS LEVEL 4PERFECT! 3 STARS LEVEL 7PERFECT! 3 STARS LEVEL 8PERFECT! 3 STARS LEVEL 9PERFECT! 3 STARS LEVEL 10PERFECT! 3 STARS LEVEL 11PERFECT! 3 STARS LEVEL 12PERFECT! 3 STARS LEVEL 13PERFECT! 3 STARS LEVEL 14PERFECT! 3 STARS LEVEL 15PERFECT! 3 STARS LEVEL 16PERFECT! 3 STARS LEVEL 17PERFECT! 3 STARS LEVEL 18PERFECT! 3 STARS LEVEL 19PERFECT! 3 STARS LEVEL 20PERFECT! PLANET DEFENDEDALL LEVELS COMPLETED! DISTINGUISHED SERVICE CROSS2 STARS ON ALL LEVELS MEDAL OF HONOR3 STARS ON ALL LEVELS