Good game, simple and to the point. Quick note is that I found with the gamepad I couldn't aim? It wanted to keep the last mouse position.
Thanks!
The detection on the gamepad needs a little work. If you move the mouse, the game switches you over to using mouse location as your aim point.
If you stop moving the mouse (just shove it to the edge of the screen if it won't go away) you should have no issue using the gamepad to aim.