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