First, i just want to say that i love the design of the green robot, he looks really cool. but i think the speed is too fast to the point where it's almost uncontrollable. i think the yellow robot is a bit useless since he can only shoot buttons that reincarnate him(or i missed the part where he can shoot something). i think there should also be text that explains the controls, and i suggest not using the ESC button to exit out of the blue robot's platform moving state.
other than that, it's pretty great! good job :)