The Letter: Classic Edition Achievements Here is the full list of all 26 The Letter: Classic Edition 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 LetterCollect the letter. The Mystery BeginsLeave the bedroom. Clue 1Collect the blueprint. Clue 2Collect the note. Clue 3Collect the knife. Clue 4Collect the syringe. Clue 5Collect the ring. Secret Tape 1Collect 1 Secret Tape. Secret Tape 2Collect 2 Secret Tapes. Construction ValleyLeave Construction Valley. Clue 6Collect the ID Card. Clue 7Collect the key. Secret Tape 3Collect 3 Secret Tapes. Secret Tape 4Collect 4 Secret Tapes. Sketchy AlleyLeave the town. Medical HorrorsLeave the medical facility. The Final LetterCollect the Final Letter. What A Nice VacationLeave the beach. Secret Tape 5Collect the final hidden tape. Goodbye NightmaresLeave the final dream after grabbing the final tape. Hidden Letter 1Discover the first hidden letter. (Bedroom) Hidden Letter 2Discover the second hidden letter. (Construction Valley) Hidden Letter 3Discover the third hidden letter. (Sketchy Alley) Hidden Letter 4Discover the fourth hidden letter. (Sketchy Alley) Hidden Letter 5Discover the fifth hidden letter. (Construction Valley) Hidden Letter 6Discover the sixth hidden letter. (Sketchy Alley)