Flat 9 Achievements Here is the full list of all 3 Flat 9 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 End of the LineYou have reached the Flat 9, but something awaits you Flat 9Complete the game Nothing Escapes YouYou found every anomaly