Really fun, kept me hooked until I beat it
Took me quite a while to get used to the order of the weapons though, a little DMC-style weapon swap indicator/wheel thing would help with that. You could also put attack cooldowns there, so it's not a waste of screen space for more experienced players
Also the invuln after taking damage seemed a bit short
Would also be neat to add special big projectiles that can be reflected with the melee attack
It might make sense to do figure out some alternative to standard sealing on medium-tier enemies. (I don't think there's sealing at all right now?) I flew up trying to melee them only to get shot down a number of times. Maybe something like they hold their attack startup up to an extra like 10~ frames if you're in "approaching for melee attack" range?