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