The Royal Revenant enemy from Elden Ring returns as a Boss in Nightreign. This enemy is known for teleporting frequently and unleashing devastating slams and swings with its arms which are difficult to roll through, so it is safer to block or run away when it attacks.
The Revenant can also spit out a poison cloud that covers the floor for a time. It is recommended that one player takes on the attention of the Revenant while the other two attack it from behind.