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 wonMineralogistYou found all of the cristals. 25 July 2025 - Add a guideAudiophileYou found all the discs. 25 July 2025 - Add a guideHealthyYou reached the maximum of HP. 25 July 2025 - Add a guideFullmetal AntagonistSplash. 25 July 2025 - Add a guideMaster KeyCongratulations! 25 July 2025 - Add a guideColosseumYou proved your worth in a battle to the death. 24 July 2025 - Add a guideBig SwordA big sword made by little guys. 24 July 2025 - Add a guideHydraAnd make it double. 24 July 2025 - Add a guideCityYou reached the city. 24 July 2025 - Add a guidePotionMakes you all dizzy. 24 July 2025 - Add a guideShipCrash. 24 July 2025 - Add a guideGhostBoo. 23 July 2025 - Add a guideMoleWhack. 23 July 2025 - Add a guideMaster NonogramYou solved all of the nonograms Locked - Add a guideYOU DIEDMany times. Locked - Add a guide