Classic Shit..Nintendo Kung Fu Game

I dont know how many of you remember this game, but I remember renting it and thinking that there were a TON of levels because the back pictures had different scenery. When I got home and played it with my little brother we got bored because there were only 2 levels..we couldnt figure out how to get to the “bonus” levels the box showed. I wish the internet had been around then so I could have looked that shit up..damn.