Mushroom Challenge Achievements Here is the full list of all 4 Mushroom Challenge 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 Mushroom 0New Mushroom Found Mushroom 1New Mushroom Found Mushroom 2New Mushroom Found Mushroom 3New Mushroom Found