Master Key Achievements Here is the full list of all 15 Master Key achievements.Filter Achievement View View Image viewList view Sort by Won first then 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 AllWonNot wonYOU DIEDMany times. 17 July 2024 - Add a guideFullmetal AntagonistSplash. 16 July 2024 - Add a guideMineralogistYou found all of the cristals. 16 July 2024 - Add a guideMaster KeyCongratulations! 16 July 2024 - Add a guideAudiophileYou found all the discs. 16 July 2024 - Add a guideHealthyYou reached the maximum of HP. 16 July 2024 - Add a guideBig SwordA big sword made by little guys. 16 July 2024 - Add a guideColosseumYou proved your worth in a battle to the death. 15 July 2024 - Add a guideHydraAnd make it double. 14 July 2024 - Add a guideCityYou reached the city. 14 July 2024 - Add a guideShipCrash. 14 July 2024 - Add a guideMaster NonogramYou solved all of the nonograms 13 July 2024 - Add a guidePotionMakes you all dizzy. 05 July 2024 - Add a guideMoleWhack. 18 June 2024 - Add a guideGhostBoo. 26 May 2024 - Add a guide