Durumu the Forgotten
There will be a tank swap, taunt at around 4 stacks of Serious Wound. Step into Life Drain to intercept. During phase two, the raid should split itself between the yellow, red, and blue cones. Move each cone around until the three fog adds are revealed, and kill them. Move out of Force of Will and pools on the ground. During the third phase, be patient and navigate the purple maze while keeping ahead of the death beam. In the maze, stuff on the ground hurts, so stick to the cleared melee or ranged path. Tip: Point your camera downward to better view the cleared maze pathing.
Kite the boss to prevent him from picking up too many Living Fluids, and kill them. Tank swap at around seven Malformed Blood stacks and avoid dragging him over the purple Volatile Pools. Only tanks should stand in front of the boss. Collect the red Mutagenic Pools on the ground dropped by Living Fluids to become mutated, DPS the boss. Avoid the red pools when you are mutated.