As many players likely suspected, Elden Ring: Shadow of the Erdtree features a wide range of secrets that can be very difficult to uncover. Whether it's finding an illusory wall that leads to a new region of the map, or finding one of the most incredible boss fights tucked away in an easily missable area, SotE continues FromSoftware's long tradition of telling players very little about what is possible in their games. In the Elden Ring DLC, one of the best secrets involves the Sword of Light and Sword of Darkness.