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. 25 February 2025 - Add a guideMineralogistYou found all of the cristals. 25 February 2025 - Add a guideMaster NonogramYou solved all of the nonograms 25 February 2025 - Add a guideAudiophileYou found all the discs. 23 February 2025 - Add a guideHealthyYou reached the maximum of HP. 23 February 2025 - Add a guideFullmetal AntagonistSplash. 23 February 2025 - Add a guideMaster KeyCongratulations! 20 February 2025 - Add a guideBig SwordA big sword made by little guys. 20 February 2025 - Add a guideColosseumYou proved your worth in a battle to the death. 19 February 2025 - Add a guidePotionMakes you all dizzy. 18 February 2025 - Add a guideHydraAnd make it double. 17 February 2025 - Add a guideCityYou reached the city. 17 February 2025 - Add a guideShipCrash. 16 February 2025 - Add a guideGhostBoo. 16 February 2025 - Add a guideMoleWhack. 16 February 2025 - Add a guide