Good platformer, bad stealth game
The stealth parts aren't nearly as good as metal gear solid 2 or splinter cell, the shooting isn't exciting, the graphics aren't really impressive either, the only parts that save this game are the levels where you need to go through "obstacle courses", these are platforming levels that are made to look like serious stealth game levels, but they're fun nonetheless.
You have a ton of neat little gadgets which are pretty fun to use, I guess...
Overall this game isn't really bad it's just not as good as other stealth games, it's obvious that the developers tried to create a combination of splinter cell and metal gear solid and also add their own ideas, and what came out in the end was an average game.