Upgrade from the first one and an instant hit.
You have 4 characters, each with there own strong points. It has been a while and don't remember there names but you have your big "heavy hitter" down to the small fast kid that uses speed to his advantage.
You have your basic 2 player action where you each pick a character to play with and you simply go level by level working together to beat up gangsters and martial arts masters. There is not to much of a story line, but it is not really an RPG either.
The only bad thing I would have to say about this game is that although it is a good upgrade from it's original, I would like to have seen a bit of character development incorporated into this one. You characters are the same strength and speed though out the entire game.