Elden Ring players that want to access the Shadow of the Erdtree DLC will need to beat both Mohg, Lord of Blood and Starscourge Radahn. Many Elden Ring players have long been aware of the necessity to defeat Mohg to play the Shadow of the Erdtree DLC, but they may not have realized that Mohg is just one of the optional bosses that must be defeated to access the new content.