Could easily be improved
The aiming and sound effects are dead-on (however, there is no noise eminating from the robot's gun), and the concept is enjoyable. But I agree with the previous posts stating that the game is still very slow and, to put it bluntly, boring.
Maybe if you added more powerful infantry (or just more in general) near the beginning of the game or allowed the special bar to load faster than the game would be of much higher quality. You should also add more quickly-paced music to go with it.
Think about that,
KarpOfMagik