Mary Achievements Here is the full list of all 12 Mary 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 Start of InvestigationComplete Chapter 1 MaryComplete Chapter 2 Was justice done?Complete Mary Secret RoomOpen the secret room's door Dumb DetectiveDelay 5 minutes in Ballroom Detective Grade 10Answer all 10 questions correct Ops..Find a Door Without Collision WandererSpend 5 minutes walking through the streets. DarknessBurn a specific lamp Bad BoyDefeat Murv Ill-bredGo up the stairs without ask to doorman 100%