Cards of Cthulhu Achievements Here is the full list of all 29 Cards of Cthulhu 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 ShowdownDefeat 5 monsters. Shadow BombDefeat 20 monsters. Destroy the WeakDefeat 45 monsters. Mind StealDefeat 80 monsters. Surprise BagDefeat 125 monsters. 5+ HealthDefeat 150 monsters. End of Madness?Defeat Cthulhu RevengeDefeat 175 monsters. HealDefeat 200 monsters. Strong Meteor Third pick option Repeat Copycat Heroic End of Madness Enemy Life Reduction 1Defeat 255 monsters. Enemy Life Reduction 2Defeat 275 monsters. Enemy Life Reduction 3Defeat 295 monsters. OverchargeDefeat 260 monsters. MarkDefeat 280 monsters. BuffDefeat 310 monsters. VampiricDefeat 330 monsters. Fourth pick optionDefeat 340 monsters. RandomDefeat 360 monsters. Enemy Life Reduction 4Defeat 370 monsters. Absorbed PowerDefeat 410 monsters. Enemy Life reduction 5Defeat 440 monsters. Enemy Life Reduction 6Defeat 500 monsters. End of NightmareDefeat Cthulhu on Nightmare Mode.