Polygon Attack Achievements Here is the full list of all 5 Polygon Attack 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 The first serious opponentKill the first boss Two versus oneComplete the sixth level Easier than you thinkKill the twelfth level boss Absolute dominationKill the last boss Support for supportAt least one ally must survive