Really cool prototype. I love the DHT-style ammo counter, please keep it the way it is. The dodge is very fun to use with bullet time, extremely satistying. Guns all have a nice feel to them, each is distinct and the reload animations are really well done for such simple graphics. I found the recoil to be fun to handle, using bullet time to lead in the bullets as the muzzle rose and I continued firing. I like that I can go full John Wu with a shotgun and/or MG and snipe dudes with the bolt action.
Wish the level was longer, I wanted to keep going. I would give an option to turn off the lowrez filter.
Double-clicking will cause semi-auto guns to fire twice, especially noticable with shotties. I'd just wait for another input until the fire animation is complete.