Cool little game, reminds me a bit of Doom. If you want to continue on this project an ammo counter would be one of the things I'd add first.
I really don't like anything that makes gunplay unrealistic (crosshairs, ammo count), but visual cues are fine :)
I'm sitting on an update that adds bulletholes and blood so we can better see where the gunshots went.
An idea might be to add bullet casings on the gun's side... Thanks for playing !
btw the update is here :)