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