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.
Reach the "Harmonized Force" ending.
Reach all endings.
Reach the "Power of Cleasing" ending.
Collect all entries in the collection.
Collect all lore.
Craft all potion recipes.
Craft a potion recipe for the first time
Reach the "Blessing of Pure Blood" ending.
Reach the "Chaotic Power" ending.
Reach the "Power of Vile Blood" ending.
Finish all levels.
Defeat Corvus.
Collect all story bits.
Unlock all plague weapons.
Defeat Urd.
Finish "Hermes Fortress" level.
Defeat Varg.
Defeat Sound of the Abyss.
Finish "Royal Garden" level.
Defeat The Hanged Queen.
Collect all potion ingredients.
Defeat any boss without using potion.
Fully upgrade a potion.
Defeat Mutated Odur.
Defeat God of the Fools.
Fully upgrade a plague weapon for the first time.
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.