So, I'm at chapter 6 in Uncharted 2, and two things has struck me. People wearing grey suits and has a red hair is likely to die in piles. There are like 5 different enemies in this game (so far), and I'm willing to bet that 50% of them are using the same grey suit/red hair model. Weak. 
 
Also, the AI is Fubar^2. It's so bad the game gets harder because, when the game tells you to do some sneaky action (and that part in it self is fun and works as a good counter to all the shooting), it's so hard to actully know what the enemy will do before you reach him.  
 
Despite these problems, I like the game.