Cthulhu: The Cosmic Abyss Achievements Here is the full list of all 27 Cthulhu: The Cosmic Abyss 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 Flag Filter All None 27 Offline Mode 27 Single Player 9 Main Storyline 2 Collectable 5 Missable 4 Cumulative + Link flagsOR joinAND join Achievements without these flags What are achievement flags? Click to find outApply The AwakeningFind Mei in the Other World. The ExcavationCross the maze. The TempleEscape from the deep one. The Other WorldLeave the Other World. The CitadelGet the Star of Shamash. The Last doorReach the prison. Cosmic AbyssReplace the watcher. Against the tideCross the maze without reassembling the cursed totem. In deep watersRestore the seal and destroy the deep one. His master's voiceReach the star without killing the guardian. Better than PandoraOpen the door without letting the matter spill out. Mens sanaFinish the game without exceeding the corruption threshold. Augmented agentFind all evolutions. Full chargeFind all energy upgrades. Thanks KeyAnalyze 25 clues ElementarySolve 15 deductions. InspectorFind 10 sub-clues by inspecting objects. AddictedUse 10 doses of Lichen. Macro wavesReveal 25 different clues using sonar frequencies. ArtistReconstruct Mei's drawing. Let there be lightReactivate the PIT station. Cthulhu fhtagnTranslate the temple inscriptions. LinguistTranslate the language of the great race of Yith. Beyond the sensesUsing sonar, reveal the invisible tentacles of the citadel's guardian. Where am I?Teleport using the Star of Shamash. Open SesameUnlock a yith mechanism using sonar. A new watcherPrevent Cthulhu from awakening.