Very nice idea. If you want to flesh it out more, you should focus on the tradeoff between staying on a high powered side vs randomness during mobility. Try to focus on the strategy element.
There seems to be some problem with the projectile detection, sometimes bullets just pass through enemies.
It is not your game specifically, but for some reason unreal games just cap out my gpu with an almost empty scene. Wonder why that is.
Very nice first game, and cool idea!
Our game has similar controls, good to see others experiment with this idea as well. :)