The concept of switching bodies, having to alternate between "powerless" and "power", is common in video games. What makes this game stands out is the "possession".
It might have only been "possessing" a gunman, but by itself, the game demonstrates potential.
At one point, you are a pitiful slime. The next moment, you slam a bullet into the opposing henchman.
Rather than platforming, the concept of "possessing" should be polished, and a bountiful of ideas would come.
One other thing, the control is just right, neither clunky nor oversensitive.