Diablo 4 Vessel of Hatred ending sets up a bigger battle to come
Upon arriving at Akarat’s tomb, the Spiritborn shaman Eru betrays the group, revealing he made a deal with Mephisto to spare Nahantu when the Lord of Hatred returns to Sanctuary. He apologizes to the heroes and steals Mephisto’s soul stone and Akarat’s human body from his tomb before disappearing through a portal.