Doorways: Prelude Achievements Here is the full list of all 13 Doorways: Prelude achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.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 13 Single Player 3 Main Storyline 9 Missable Link flagsOR joinAND join Achievements without these flagsNote: Flagging is not complete for this game What are achievement flags? Click to find outApply A true AgentPickup all notes The Case of "The Professor"Pickup all notes from The Forest of Stakes The Case of "The Sculptor"Pickup all notes from The Auditorium Boy scoutCollect your first Relic ProfessionalCollect all Relics Marble CollectorCollect all Relics of Marble from The Cave Metal CollectorCollect all Relics of Metal from The Forest of Stakes Bronze CollectorCollect all relics of Bronze from The Auditorium Making HistoryFind all Torture sketches Creating ArtFind all Museum paints No more introductionFinish the Tutorial Chapter 1 clearedFinish Chapter 1 Chapter 2 clearedFinish Chapter 2