Is it just me, or does Red High seem to employ Rubberband difficulty?

Spirit of Rock has both Physical and Magical Immunities (he can only use one at a time, though).
I think Postulates with Balrogs only has Darkness (Blind), though, not Physical Immunity.

Oh yeah, it's just Blind. Weakness (no jumping) can also be annoying, esp. when the next boss is standing somewhere high up. Or is the nurses.