The gameplay feels really good. Gunplay feels punchy and enjoyable. I am also a sucker for dynamic music, and really like the soundtrack. I like that you can bail out any time, so there's no pressure to complete a floor and risk losing your progress unless you get greedy. The art is a little goofy but it's charming.
It's a little hard to see with the low contrast sometimes, an accessibility feature would be very welcome. Also a bit more variance in the guns, many of them felt kinda same-y especially in late-game progression. The boss is also surprisingly easy compared to the floors below it, but that's kind of symptomatic of this genre of game and not necessarily a dig on you.
Overall very enjoyable!