This looks good and plays pretty well. I felt like the hitboxes were very slightly off, I know they are supposed to be super small in these games but I swear I straight up walked through a line of bullets a few times. And other times I died when I thought I wouldn't but I could have missed something I guess, I'm not the best at this genre.
Few minor things, you can keep moving the selection while the screen is fading and hear the sound and one time I got shot while respawning and it played the sound but not the death animation and the stage reset again even though I wasn't dead on screen.
Would like to see some sort of unique features that makes this stand out in the future but good work so far