I can't believe Gamespot critics liked the voice acting.
I love stealth games and the only thing that kept me attached was the challenge of a no-kill run through with minimal to no detection. Of course even that couldn't keep me interested for long as every time I tried to enjoy the cut-scenes one of the characters decided to speak. Thus, the game was overall pretty boring.
If you enjoy FPS, or Stealth, or Assassin's Creed it's worth trying out, but this was not an immersive adventure and the fun dies out rather quickly.
The graphics were decent, but this game is geared towards nVidia cards and Radeons will find themselves working harder to keep up.