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