By far the best stealth game i ever played. Realistic, rigorous and entertaining. Don't miss this one.
The game is a lot more realistic and brutal, which suits the series really good. The settings are a good mix so you don't get bored seeing the same thing all the time.
What makes the game a lot better than the first two is, that there are different kind of aims that you can achieve in each level, which is really motivating and adds a lot more realistic feeling. Furthermore, you can interrogate almost every person/enemy and gather information this way.
Last but not least it is also possible to play the game in a more action-based way if you wish to. I still prefer the stealth-way, but if you want to shoot your way through your enemies you can do that in most levels.