This isn't an official WIP, just showing that you can get on top of the ceiling in stage 9. It leads to a deadend that you can't do anything with though.
So after messing around with the stage 8 boss, I found that if I shoot him until he attacks me, I can catch him with a loop for the sabre in which maximizes my damage on him with it. This results in 50 frames faster than just shooting him.
Did stage 8, probably not totally optimal. Gonna test light saber on the Kalharr Boss Monster, though I doubt it's faster cause of downtime between jumps.
Level 5, 146 frames faster. It can be 155, but I lost 9 frames cause I wanted to hit the enemies after the boss, causing lag. Not sure if I want to keep it this way or not.
Okay, finally done with level 4 (I think, never know). Saved an additional 253 frames over the last version I posted. Thanks to Tompa for making me aware of spike slide boosting!