This game oozes charm - it's got that old school vibe and aesthetic, the music really sets the pace. It's simple, but effective - there's something really fun about just spinning about deflecting bullets to some funky beats. It gives me the same sort of feel as playing the first Ratchet and Clank, except it's the half-brother born out of wedlock with bullet hells.
The gameplay and character feels good, the feedback is really solid, and it plays great - my only thought is maybe having the deflecting of bullets be more impactful, like someone mentioned with a minor invincibility buff, or maybe just an AOE pulse that clears blue bullets out to avoid accidentally flaying into the masses. Frenzy taking control away from the player would have been cool if it felt impactful - a lot of the time I sorta just break-danced my way into the horizon, avoiding every enemy and hitting every wall.
All in all, this game feels like it has style. It's got a very clear aesthetic in mind, and everything ties into that. Very old school, very cool.