The entirely LA city is now in your hands, you can go wherever you want and do what you want, this game is awesome.
The graphics ar great, are better than those from gta, but sometimes the camera is hard to deal and difficults the game a bit, but the game graphics are still superb, the city of LA is excellent recreated.
The gameplay isn't too good at first but as you get involved into the game you gain experience training in dojos expending your badge points, and becomes great.
The sound is just ok, but you find too much rap here, hopefully it supports custom soundtrack .
This game have multiple endings and its a bit linear, and if you fail a mission you can go to the other one without doing it again, this is a great addition but if you do so you probably will get the poor ending.
A dedicated gamer could finish this game in almost 15-20 hours , passing all the missions succesfuly and don't skipping them when they fail, but if not after beating the game, you can go to the place you want and solve random crimes, so, if you liked to walk through the streets of vice city doing whatever you want you will have hours free roaming with this game.