Awesome start! Lots of nice little touches like the enemies spinning out of control when shot and lifting your guns when you face a wall. All the mechanics you have feel really satisfying. I feel like the minigun could use an overheat or reload function and the rail gun a longer cooldown just so that their use is a bit more limited. And of course sound and music would make the game that much better. I'd love to see this built out more with more power ups and enemies. Nice work!