Sick as fuck demo, excited for where this goes.
But in earnest (as I always try to be), I have some points:
RPMs are way too slow on everything but ARs and sniper rifles (SMGs and Minigun for ref)
Bullets feel like they take way too long (they're slow)
RPG is lame, same for laser weapons (how do LMGs impact more environmental damage than a literal explosion?)
Hit detection fucks up sometimes (go up to the north wall and shoot at it, also happens with the dummy)
Bullet sounds (and bullets in general) feel way too weak (with exceptions).
Very excited to see where this goes!
Best of luck, stay restless, cheers!