I'm a huge fan of the Uncharted series, but I was disappointed in U3 in just about every area except the puzzles and the continued fantastic character development, interactions, and humor. Perhaps my hype for the game was just too great. On the positive, though, I started my second playthrough and am already liking it much better.
My two biggest complaints are the gameplay and the enemy AI. For gameplay, the worst part is melee when the enemies grab onto you and you have to tap "O". Man is that annoying, and it slows everything down. Gets really old by the second time it happens. As for enemy AI, it's just downright terrible sometimes. This needs major improvement. I want to be a little more convinced these are real people. The AI fails miserably at seeming even somewhat realistic.
As for the multiplayer, however, my gosh it's fantastic. I'm not even a multiplayer guy, but I am beyond addicted to U3's multiplayer. It's even better than U2's multi. Think I just hit level 63 and still can't get enough.
Btw Aldro, I refuse to believe you wrote all that in one hour. If that's really true then consider me depressed over my time efficiency compared to yours.