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 wonFullmetal AntagonistSplash. 31 July 2024 - Add a guideColosseumYou proved your worth in a battle to the death. 31 July 2024 - Add a guideBig SwordA big sword made by little guys. 31 July 2024 - Add a guidePotionMakes you all dizzy. 31 July 2024 - Add a guideMaster KeyCongratulations! 30 July 2024 - Add a guideCityYou reached the city. 30 July 2024 - Add a guideHydraAnd make it double. 29 July 2024 - Add a guideShipCrash. 29 July 2024 - Add a guideGhostBoo. 28 July 2024 - Add a guideMoleWhack. 28 July 2024 - Add a guideAudiophileYou found all the discs. Locked - Add a guideMineralogistYou found all of the cristals. Locked - Add a guideHealthyYou reached the maximum of HP. Locked - Add a guideMaster NonogramYou solved all of the nonograms Locked - Add a guideYOU DIEDMany times. Locked - Add a guide