I enjoyed the visuals, and the controls were nice and smooth.
I played the version 2.0.
A couple minor comments that I think would add well to it.
it is weird when the player dies to let them look around. I think the camera should show themselves on the ground and be out of their control, or flip up to the sky or something more obvious. (if you die with your back to the wall, you don't really realize it)
I think the scale of the guns is kind of funny. I think everything should be multiplied by 20 price wise. the thought of an $8.00 gun is funny.
The head shots are disproportionally epic (always one hit) compared to hitting the body which takes a long time.
Overall looking polished!
Is your goal practice? if not, what are you going to focus on to make your game stand out from all the other shooters on the market?