Marble Muse Achievements Here is the full list of all 10 Marble Muse achievements.Filter Achievement View View Image viewList view Sort 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 Thinking Outside of the BoxFound the hidden chamber Proof of Concept CompleteCompleted all proof of concept levels. Prototype CompleteCompleted all prototype levels. Product CompleteCompleted all product levels. All GoldReceived a gold medal on all levels. All PlatinumReceived a platinum medal on all levels in challenge mode. Found the Lost MarblesFound the hidden marble in all levels. All Red StarsFound all the red stars in all levels. One-hundred PercentOne-hundred percent the game. Check your progress in the credits. Rage Quit!Quitting in frustration is such sweet sorrow when you receive an achievement for it.