Solid entry, the shotgun and mid machine gun were solid but the tommy gun felt extremely weak. I liked the sound and the voice over (but come on man say it with your chest! I got a full crowd meter! I wanna hear a WWE style over the top reading!)
I didn't personally have any bad audio with the footsteps but maybe you've removed them since other commented?
Some extra feedback would be some bigger visual indicator of hitting the enemy. I think the audio there is fine, but like a red flash or something given the arcade-y feel of the game might give it a bit more impact.