Are you good at this game? I doubt you are! It's one of the hardest Master System games ever made, and I'm kind of glad I didn't own it as a kid. It would have driven me crazy! And if I also mention that it's still much easier than the arcade-version of the game, you begin to realize that someone might have had too high expectations of the children playing it back then. Ironically beating the bosses is a hundred times easier than getting to them, avoiding all the punks, bombs, fires, knives, dogs, pigs etc. that kill you the moment you touch them.
It's still a classic Master System-game, and one of the first made for the console. Many people probably had it (although I didn't) either on cartridge or card, and both the graphics and music are appealing, although very repetetive. But does it have an ending? Probably not. After you beat the third boss and your girlfriend once again is taken away from you, the game loops and level 4 is actually just level 1 again, with everything moving a bit faster. I don't like it when games do this, but it was probably the only way to extend the game but still let it be small enough to fit on a card. Poor guy, though... Fighting for the rest of his life, without ever getting his girlfriend back...
Bonus life
Fight the first three bull dogs, then jump over the fourth dog. Kick it from behind to collect an extra life.