This game is super fun!
It's one of those experiences where you just kind of blindly shoot and either die a lot or win a lot lol. It all feels a bit random but I don't mind it, I think it's fun. The upgrades are cool, the music is banging, the sfx and effects in general are immersive... I'd say a job well done!
Only thing I'll touch on is the crashing, I had some errors popping up at first. But I restarted my computer and the exe worked okay, maybe the HTML will as well.