Here is the full list of all 38 Thymesia achievements.
Unlock all achievements.
Break 1000 barrels.
Empty the first health bar of Varg in the tutorial.
Reach max level.
Defeat any boss without using potion.
Reach the "Chaotic Power" ending.
Reach all endings.
Reach the "Harmonized Force" ending.
Reach the "Power of Cleasing" ending.
Reach the "Blessing of Pure Blood" ending.
Reach the "Power of Vile Blood" ending.
Finish all levels.
Defeat Corvus.
Collect all lore.
Collect all entries in the collection.
Craft all potion recipes.
Collect all potion ingredients.
Craft a potion recipe for the first time
Unlock all plague weapons.
Defeat Urd.
Collect all story bits.
Finish "Hermes Fortress" level.
Defeat Varg.
Fully upgrade a plague weapon for the first time.
Defeat Mutated Odur.
Defeat Sound of the Abyss.
Finish "Royal Garden" level.
Defeat The Hanged Queen.
Fully upgrade a potion.
Defeat God of the Fools.
Finish "Sea of Trees" level.
Defeat Odur.
Unlock a plague weapon for the first time.
Start recalling for the first time.
Finish the tutorial.
Rest at the beacon for the first time.
Dead for the first time.
Reave a plague weapon for the first time.