Great central mechanic! Moving and shooting feels very nice, although there is a bit of an unnecessary delay after reload between when the bullets animate back to you, and when they are available to shoot again. If you reduce this delay, the attack might feel as responsive and powerful as Kratos' axe in God of War! As others have mentioned, the start is way too slow and simple. I would recommend making the enemies health low enough that one round of bullets and reload could take one out. Also, some sound effects and music would go a long way towards making it feel more polished. But this is a great start overall!