Messmer the Impaler is a major boss in the Elden Ring: Shadow of the Erdtree DLC. He is a demigod of serpent and fire, wielding a fiery spear and accompanied by a large snake1. Players must face him in the Shadow Keep Legacy Dungeon, and he is known for his high damage output and fast attacks.
After defeating Rellana in Castle Ensis, players should proceed to the Scadu Altus region. From the Ensis Moongazing Grounds Site of Grace, go directly ahead through the open door, leading to Scadu Altus. Activate the Highroad Cross Site of Grace and head north to reach Shadowkeep, the next main location for the story progression in Elden Ring: Shadow of the Erdtree DLC.
The Cerulean Coast is located in the southern part of the Shadow Realm in Elden Ring's Shadow of the Erdtree DLC. It is a hauntingly beautiful stretch of seaside that requires a lengthy, roundabout trip to access3.