Behind Closed Doors: A Developer's Tale Achievements Here is the full list of all 21 Behind Closed Doors: A Developer's Tale 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 MondayFinish Monday TuesdayFinish Tuesday WednesdayFinish Wednesday ThursdayFinish Thursday Who's that?Unlock Emily's room Memory KeeperCollect all the memories Stage 1Complete stage 1 in the slime garden Stage 2Complete stage 2 in the slime garden Stage 3Complete stage 3 in the slime garden Stage 4Complete stage 4 in the slime garden Familiar FriendKill the boss in the slime garden Get the CrystalCollect the crystal ExterminatorKill at least 70 bats GreedyCollect at least 50 coins from the caves Round 2Kill the boss in the caves Get the StaffCollect the staff after defeating the boss PyromancerKill at least 25 skulls in the Winterland Get the HiltCollect the hilt after talking to Alice Final BossKill the final boss Was it the right thing to do?Kill the lost soul when the oppotunity arises. Never ending loopChoose to let the lost soul go