The art design and the visuals are great, it reminds me of a 2008 Newgrounds game (basically my childhood). The controls need work, instead of having set aim angles, use the actual reticle as where the gun is aiming, its really tough to kill things on the floor if you can only point right in front of you or at your toes. also when you get ammo for a weapon it should say the weapon you got ammo for, not the one you have equipped. you can kind of just run past all the enemies and beat the boss with the special weapon ammo. Definitely keep working on it, a tutorial can go a long way, and some clean up passes on the details.