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