Core Of Darkness Achievements Here is the full list of all 13 Core Of Darkness 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 StaleDefeat Knight boss Hands full of workDefeat Engineer boss Big oneDefeat Worm boss DevotionFinish the run HarderReach rock level If I move my feet fast enough I won't dieReach lava level Real KnightDefeat Knight boss 2 times Real KillerDefeat all bosses. Darkness around meDie 10 times. I'm KillerKill 100 enemies. Endless VSurvive 5 vawes in endless mode. Endless XSurvive 10 vawes in endless mode. Endless XVSurvive 15 vawes in endless mode.