The walk animation looks like he's hobbling, is that intended? I'm ok with the controls and movement speed, being familiar with Dead Space and RE4. The reload thing with the bar, it seems I could quicken it with the right timing of a button press, but I couldn't figure out which button to use for that.
I definitely think enemies should go down with lesser amount of bullets, especially if you aimed at the head, or some weak spot. That would be better especially since you already have an aiming system.