i really like the gambling theming! you did well with making everything gambling themed, even if i feel i've seen gambling quite a bit i really think it was done well here! the story adds a lot and helps bring motive. the spin for a weapon mechanic is really interesting imo! the artstyle is amazing, i love it! progression was also nice and smooth, i didn't feel like it was going too fast at any point really.
now onto criticisms, remember some of this is subjective.
i feel it would've been a good idea to give more incentive for the player to fight the enemies rather than to just try and fly by and dodge them. this maybe could've been done by making the enemies block the exit?
i think that more obstacles in the level would help with my previous point and also add more fun to the game!
i think more broad character design and enemies could be good
i couldn't turn and hit enemies which was a source of frustration for me.
the menu was nice ui wise, i think the guitar(?) was a little rough on the music though. I AM NOT A MUSIC EXPERT THOUGH AND THIS IS HIGHLY SUBJECTIVE!!! otherwise the music was really good!
the boss wasn't extremely hard to dodge it was more hard because i kept rolling on the damage part of the spinner, it was a bit annoying to me. i can't think up a solution to this though since this is a core mechanic to the game, but i'll share that experience.
overall i think that the combat could've been fine tuned a little more. despite that its a solid entry, i like it. the art style and music make up for the issues i have with the combat.