First of all, MAKE IT A WEB EXPORT!!!
With that being said, i really liked the general aesthetic of the game, the lighting was very moody, the pixel art shader was well done, the enemy designs were great, the music was also really good and pretty fitting.
Some stuff could be better, don't let the player reroll onto the same weapon, specially when the rerolls take so long to gather.
The enemies felt very similar gameplay wise, some of them shot bigger bullets and faster or slower ones, but from the enemies i faced they all just shot straight at you. they were also a bit frustrating as they kept shooting without stop from outside the screen. Maybe adding a reload animation would make the enemies more fair and more enjoyable to face as you could either run them down with close combat weapons or wait for them to reload from cover.
as for the weapons i got really unlucky, i kept spinning into the revolver, i once got the space gun and while the fire rate was way higher, the damage was lower so the time to kill didn't change much and it didn't feel like an upgrade.
I feel like adding a reloading mechanic to the player would also fix this issues, maybe once you're out of bullets you're forced to reload by spinning and getting a new weapon