I hate how I actually thoroughly enjoyed it. The difficulty was good, and after some getting used to, the controls felt great, I love that fast-pacedness.
Must say I didn't really feel like the Kisumes did anything, horizontal speed is off the charts anyway, so I was never getting hit vertically.
Also noticed that if you spam your z button enough at the boss you can clear it super quickly (3 seconds...), so maybe add some invulnerability or something? It's way easier than the levels before it...
Also have to agree that the respawns take a little too long for a game like this