Here is the full list of all 14 Wytchwood achievements. It takes around 10-12 hours to unlock all of the achievements on Windows.
Collect all twelve wicked souls to complete the Goat's contract.
Collect the souls of the Hogs in the Market.
Collect the soul of the Wolf in the Village.
Collect the soul of the Stag in the Mountains.
Collect the soul of the Hawk in the Fields.
Collect the soul of the Ram in the Village.
Collect the soul of the Fish in the Docks.
Collect the soul of the Rat in the Graveyard.
Collect the soul of the Cat in the Market.
Collect the soul of the Bear in the Forest.
Collect the Soul of the Ox in the Fields.
Collect the soul of the Leech in the Swamp.
Collect the soul of the Snake in the Forest.
Remember your contract with the Goat.