Assassin's Creed Valhalla Isle of Skye Find A Way to Open the Door Using Ancient Mechanism

Assassin&Creed Valhalla Isle of Skye Find A Way to Open the Door Using Ancient Mechanism. Part of the Isle of Skye expansion. The Valhalla hero has all 5 shards, and has reached the Cave of Door door. The hero puts in the shards, but the door remains shut. The hero needs to find a way to open the door using the ancient mechanism.