I only was able to pass third level. Because I didn't get what the self-destruct does after struggling 10 minutes.
At first level I spent so much time to pass, because there was critical bugs. For example, no matter if robot jumps on spike, he will die instantly, no matter what. But I fixed it by waiting robot come closer to spike then with placing the jump command.
I really liked the sounds. I very liked synchronized walking sound with robot's footsteps.
Besides everything it was quite a nice experience. Keep doing what you doing!