[Wow this was super long, but there's only a few parts in there that are really new and that she actually cares about. Spoilers, it's not about Miata or Katerina's sad backstory.]

Every demon's killed at least one person here, haven't they? So we should be able to pool together what we know and at least figure out each of their basic capabilities. Like we know Satan's schtick with lava, Lucifer uses swords, and Sloth heals from everything but seems to be weakest to fire.