The game really hits you with a cool aesthetic, but my immediate experience was kind of interrupted by the fact I had no idea what to do... a little keyboard mashing later I figured out A was shoot--so it could have been nice to include a tutorial or clear prompt for the controls before starting.
I liked the way the weapon shot but like many of the others I found myself mainly holding it down instead of really thinking about using that spread mechanic as it just seemed easier. Perhaps integrating a weapon overheat mechanic could help that become more of a thing.
Furthermore, I felt there was a bit of a lack of progression with my few tries always yielding waves upon waves of similar enemies and placements. But perhaps that's just me not getting far enough... haha.
Either way you've got a nice eye for a cool aesthetic so I look forward to seeing where you take that next!