Not much I can say that hasn't been said before, the greatest testament is in the score. There is NO game in this game, you can usually not walk more than 50 metres down the corridor (or more appropriately windswept walkway) before another 15 minute cut scene hits you. And yet I still gave it 10. That shows how well it goes about making the story real. Oh, and about that plot twist. It's really not all that bad; anyone who's read a review of the game, and played the original is going to be pretty up for anything, and so I wasn't really all that shocked or surprised. And lets face it, you can run around in your birthday suit at one point in the game. Highly amusing.
Summary: A great storyline, hampered by a (much improved, but still lame) game engine. This is a must-rent, but there's no point in buying it, because you'll complete it within a couple of days tops.
Graphics: 10 (absolutely top-drawer, there's not a single point in this game that doesn't look amazing)
Sound: 10 (again, wonderful, with the guards' reactions to the sounds giving it the perfect score)
Gameplay: 10 (this is including storyline, the gamplay alone would be about a 7)
Longevity: 9 (Lots to do, but gets really boring collecting all the dog-tags on different difficuties)