In order to pass the spiked room that is in Subterranean Hell, use one of these methods. The first is to equip the following souls: Puppet Master, Bat Company and Skeleton Ape. Fly up until you get to a space on the floor with Bat Company. Then, use Puppet Master so you can transfer to the next space. Fly again with Bat Company to the other side. The second method is to equip on your R souls, Bone Ark. Then, simply use it from the start of the spiked room and wait for it to carry you the next end.