I agree with Natsumi. There are way too many hits on this boss in total. I don't mind a boss having multiple phases, but 50+ seems a bit too much. I think you could actually separate the buzz saw attacks, and the bomb attacks, into 2 separate bosses, actually. They are both refined and polished enough that it could work. (Just my idea, mind.) Also a few audio notes: That buzz saw noise; It works, but it gets repetitive quickly. It's also quite loud and distracting. I think a quieter, less over-powering sound would work better. The alarm that goes off after you beat a phase; it's playing repeatedly, but too quickly, so it's cutting itself off. I think it's originally the Launch Base Zone alarm sound, which plays at the right speed without cut-off there.