One Line: Letters and Codes Achievements Here is the full list of all 10 One Line: Letters and Codes 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 10 CardsComplete 10 levels Locked20 CardsComplete 20 levels Locked30 CardsComplete 30 levels Locked40 CardsComplete 40 levels LockedFirst pieceReveal 1 piece of the letter Locked10 piecesReveal 10 pieces of the letter Locked20 piecesReveal 20 pieces of the letter Locked30 piecesReveal 30 pieces of the letter LockedRead the LetterReveal all pieces of the letter LockedLove LetterRead the real letter Locked