OK, so this isnt GTA, and dont buy it if thats what you are looking for, you WILL be dissapointed, but on the other hand if you are looking for a genre crossing, fun game, then i would get this. The game has 4 main elements, Shooting, Driving, Fighting and Stealth (not a big part of the game), you are kinda forced into doing these at different times, but it works well, and it helps to keep the story flowing. The story isnt bad, but isnt great either, takes a few twists and turns, but is generally ok.
I have heard quite a few people complaining about the camera in this game, but I've finsished the game and its only let me down twice. So its not really a problem. Graphiclly its nice to look at but not anything special. The cars all have different handling, and specs, and are nice to look at.
Throught the game, you have the ability to upgrade your driving, fighting and shooting abilitys, RPG style, this is an incentive for completeing the random crimes and makes the game alot easier if you have at least some of the upgrades.
So overall Im gonna give this 4 ( I would give 4.5 but that aint an option). It is a solid game, with no major flaws. I had a alot of fun with it! Enjoy!