This quest has both Damage Walls and Gravity Barriers. Bring monsters who can counter both gimmicks if possible, otherwise evenly split your team between the two gimmicks. Though Nurarihyon is a water monster, there are many Fire mobs throughout the quest. Bringing one water monster can help clear these mobs. Deity Slayer L will do a lot of damage to any Deity monsters. Avoid bringing these monsters if at all possible.