Really dynamic gameplay, and not something I think I would find in an MZ game (in a good way!). That said, things feel a little TOO frantic. I couldn't get past the second stage boss, and when I played the arcade mode I was able to nearly defeat the 3rd easily (a few more tires and I would have gotten it). The difficulty ramp is very VERY steep. Perhaps TOO steep. Also, I feel that with the engine it might be able to handle the multiple precise inputs for a game like this, so with things going as fast as they were, I was reacting, but getting hit with something else, like a random projectile that came out of nowhere.
Suggestion: It doesn’t have to be so frantic, and it can still SEEM like it is, especially with damage taken stun locking the character. Give them invulnerability frames. Also, definitely tone down the difficulty. While it’s a boss rush mode, that second boss was NO JOKE.