Crystal Fortress Achievements Here is the full list of all 18 Crystal Fortress 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 The First DefenseFinish Chapter 1 Out Of The MudFinish Chapter 2 Freezing StruggleFinish Chapter 3 Heat of BattleFinish Chapter 4 Captain's ChosenDeploy each unit at least once Initial FortificationsAcquire one upgrade for each unit Elite CaptainUpgrade Phoebe to the max Fully AutomatedUpgrade Turret to the max Crystal PaladinsUpgrade Soldier to the max BullseyeUpgrade Archer to the max Not So FragileUpgrade Fortress to the max Full ArsenalAcquire all upgrades TacticianWin a stage without attacking with Phoebe No Machines AllowedWin a stage without building any Turrets (except in Chapter 1) Where's the Backup?Win a stage without deploying any Soldiers (except in Chapter 1) Lacking Cover FireWin a stage without deploying any Archers (except in Chapter 1) UnshatteredWin a stage with full fortress health (except in Chapter 1) Crystal ClearObtain all other achievements. Congratulations, captain!