The game is a fantastic combination of stealth, shooting and close combat. Throughout the game one should pay attention to the position of your enemies for, if they spot you, you're dead. You have different missions in order to put down the terrorist threat which menaces America. you have to use different weapons (buy new ones). You have your crew which, at times, can help you through. You can crawl in vents, you can climb and take down enemies from midair.
The graphics are wonderful, the music good enough.
The main drawback of this game is the end. Poor indeed. No matter how many times I tried to push those damned controller buttons, I still end up dead.
Overall a good game.