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 wonAudiophileYou found all the discs. 03 November 2025 - Add a guideMineralogistYou found all of the cristals. 03 November 2025 - Add a guideHealthyYou reached the maximum of HP. 03 November 2025 - Add a guideMaster KeyCongratulations! 03 November 2025 - Add a guideFullmetal AntagonistSplash. 03 November 2025 - Add a guideMaster NonogramYou solved all of the nonograms 03 November 2025 - Add a guideBig SwordA big sword made by little guys. 31 October 2025 - Add a guideColosseumYou proved your worth in a battle to the death. 31 October 2025 - Add a guideHydraAnd make it double. 31 October 2025 - Add a guideCityYou reached the city. 30 October 2025 - Add a guideShipCrash. 30 October 2025 - Add a guidePotionMakes you all dizzy. 30 October 2025 - Add a guideGhostBoo. 30 October 2025 - Add a guideYOU DIEDMany times. 27 October 2025 - Add a guideMoleWhack. 27 October 2025 - Add a guide