A very neat concept! For the first little while, though, I was confused. I didn't realize that "melee attack" meant taking over an enemy. It took until the first boss arena for me to realize this was how to combat enemies. Movement feels nice, but the controls are not really what I'd expect. I naturally went to use the arrow keys to move, but quickly swapped to WASD when I realized I had to use JKL for actions.
A few in game explanations would go a very long way. Potential!