Get Buggy with it.
Im not the kind to be picky on my games, but I have to give this one a low score. Ill just put it like this; your game WOULD be good if you could actually CONTROL your robots movement. You also need to make sure your weapons actually move WITH your character, give more background, add a storyline, and different enemies and levels. Also, like Zenithscope pointed out, you can use all three weapons AND move at the same time. For a demo, it IS short. You need to add better graphics, animation, and too numerous others to count. Sorry, better luck next time.