The main hazards are Damage Walls and Warps. All four sides will have Damage Walls at all times so you need a full team of NDW. If you can get a few monsters with NDW+NW, it will be great. There will be a Zombie Loop that is similar to the one in Izanami. In order to break the loop is to defeat all Zombies in one shot. You can also try to get lucky by leaving 1 Zombie up while having 2 other mobs dead.