Aeternum Achievements Here is the full list of all 16 Aeternum 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 Art HistoryDefeat Candynce Sky on any difficulty. Engineering FundamentalsDefeat Millicent Elmsley Charles Helena Astor on any difficulty. Avant-Garde LiteratureDefeat Samantha Clementine on any difficulty. Basic Sailing CertificationDefeat Greytail the Wicked on any difficulty. Sewing Crash CourseDefeat Winter on any difficulty. You are DemonicClear Story mode without continuing on the Demonic difficulty. You are a Lunatic!Clear Story mode without continuing on the Lunatic difficulty. You are Extra DemonicClear the Extra stage on the Demonic difficulty. You are Extra Lunatic!Clear the Extra stage on the Lunatic difficulty. Doctorate of Magical StudiesClear the game on Story, Arcade, Arrange and Extra modes with Ellica on Demonic Difficulty or better. Master of Vessels Upon OceansClear the game on Story, Arcade, Arrange and Extra modes with Aubrey on Demonic Difficulty or better. Fellow of the Order of Arcane EngineersClear the game on Story, Arcade, Arrange and Extra modes with CeeBee on Demonic Difficulty or better. InvincibleClear Story mode using any character without getting hit and without using a bomb on Normal or Hard Difficulty. Invincible DemonClear Story mode using any character without getting hit and without using a bomb on Demonic Difficulty. Invincible LunaticClear Story mode using any character without getting hit and without using a bomb on Lunatic Difficulty. Higher LearningComplete the tutorial.