What a great game it was. Thank you for the review. We have spent hours and lots of tokens for this game. (by the way Cadillacs and Dinosaurs is widely know as Mustapha at the arcade)
Also I remeber that after playing this game at the arcade for a long time, a friend of mine bought Play Station and the first game we bought was Metal Sulg and finally we are able to finish the game.
Finallay when you said " 1 Keyboard, 2 Dudes" I remeber this meme: