Game feels polished, snappily fast-paced and fun! I really love how you've used orange as an indicator of anything that can hurt you.
Reloading takes a little long, which I initially thought it was a bug as I couldn't shoot or reload. The long reload time is fine, but would be nice if there is in indicator of how long it'll take (Maybe animate the ammo bar filling up, or just a semi-circular bar around your character etc).
Overall, I had great fun with this game, great job!