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. 12 May 2026 - Add a guideHealthyYou reached the maximum of HP. 12 May 2026 - Add a guideAudiophileYou found all the discs. 12 May 2026 - Add a guideMaster NonogramYou solved all of the nonograms 12 May 2026 - Add a guideMineralogistYou found all of the cristals. 11 September 2024 - Add a guideMaster KeyCongratulations! 10 September 2024 - Add a guideFullmetal AntagonistSplash. 10 September 2024 - Add a guideBig SwordA big sword made by little guys. 10 September 2024 - Add a guideColosseumYou proved your worth in a battle to the death. 10 September 2024 - Add a guideCityYou reached the city. 09 September 2024 - Add a guideHydraAnd make it double. 31 August 2024 - Add a guidePotionMakes you all dizzy. 31 August 2024 - Add a guideShipCrash. 31 August 2024 - Add a guideMoleWhack. 27 August 2024 - Add a guideGhostBoo. 26 August 2024 - Add a guide