Minor issue: pressing CTRL+W will exit the web page. So if I shoot and jump, I instantly lose :P
If you're already doing fixes, it'd be nice if camera would be more oriented not entirely facing only the right? Like show at least 1/3d of the left side of the screen, it would make going on platforms to your left a bit more doable.
Anyway, the game is fun aside from some quirks! I like how your gun is hitscan, refreshing change from so many platformers where you can somehow see slow bullets in midair.