Congruence Achievements Here is the full list of all 9 Congruence 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 CompletionistFound all 513 congruences in the game IconicFound the game's logo CommonFound 1 of the 21 congruences that is this shape Cool C!Unfortunately, it's not a solution Elephant?Found this neat shape. Surprisingly, it's not a solution Vertical sliceFound all 25 congruences available in the Demo X marks the spotFound all 28 congruences with this pentomino Shape rotatorFound 5 congruences in one session MentatFound a congruency without using hints