This was the first game I ever knew. I found it quite interesting, but without Walkthrough, you did not know what to do to continue playing. The curious thing is that the robot was a kind of triple changer similar to the
Transformers.
Looking at the earlier posts above, it seems that the game is more complex than I imagined.
After many years, I had forgotten the name of this game and fortunately the
Eagle of Fire (aka
Phoenix) answered my question.