This is probably the most fun game in the jam! really got my blood pumping!
That said, the lack of a learn game sounds menu/dialogue, and the presumed lack of graphics for low vision people or panning controls for those with hearing problems make the accessibility score go down.
I also gave 4 stars for the sound design, not because it wasn't good (it was) but because I've heard most of those effects used in other games and without knowing you got them legally (which I doubt given your age but I could be wrong) I can't give you full credit.
ON a side note, allot of modern laptops don't come with easy to use page up and down keys, so having alternative options for music volume would be really helpful.
I also feel as though the game might be more fun if you got less ammo to start with and silver reset when you died.