Neal, that can be shortened.
Blood Mambo or Heated Battle would work for the normal battle.
Blood Mambo can work for the city battle.
Megaboss F has that demonic vibe to it.
A good request would be like a straight up soft theme giving off the vibe of like an arcane salt flat in the middle of an ocean, mostly empty except for a few monsters, and some slight treasure, with something big just.. there, but unseen, like you know its there to jump out at you.