Blind Postman Achievements Here is the full list of all 18 Blind Postman 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 Flag Filter All None 18 Offline Mode 18 Single Player 10 Main Storyline 8 Cumulative + Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply Level 5Complete level 5 Level 10Complete level 10 Level 15Complete level 15 Level 20Complete level 20 Level 25Complete level 25 Level 30Complete level 30 Level 35Complete level 35 Level 40Complete level 40 Level 45Complete level 45 Delivery completedDeliver all the letters 5 lettersCollect 5 letters 10 lettersCollect 10 letters 20 lettersCollect 20 letters SapperRemove 20 mines White wallDestroy 20 white walls Red WallDestroy 20 red walls Purple WallDestroy 5 purple walls TeleportTeleport 20 times