I have played and it is completely awesome but i was wondering if there is anything in this game didn't work right. 
 
For me there are parts where the AI sucked but that was only in parts 
 
Example: I was behind cover and i guy standing ten yards away from me and then when i popped out of cover he was just standing there pointing his gun at me not shooting. 
 
So thats something wrong with this game. It didn't destroy the experience because that was only in parts of the game

My only complaint is one that is found in similar games of the same genre, the platforming at times could get to a point where you weren't quite sure what piece of the environment Nate would latch onto or climb on. But I'm not sure is that because the game itself suffers in that area or because I had spent a lot of time playing inFAMOUS prior to starting Uncharted 2 and in inFAMOUS Cole has a habit of latching onto pretty much anything and everything when climbing or traversing the environment.

Enemies still take too much damage in my opinion.  Having heavily armored enemies is a cheap way to make the game harder.
Too much damn jumping, even if the character acknowledges it, makes me wonder if he gets tired.
The damn guardians, again, take so many hits, feels like they are hard for that nothing else.
And Lazeravic.  Not a very good villain, typical crazy guy out for power, just seems mad all the time.  Not really likeable in any sense. And you never really get the feeling, i got to take the guy out, or i want revenge.

"The damn guardians, again, take so many hits, feels like they are hard for that nothing else "

Nate looks retarded when he dies.

I would have liked more puzzles. There were only 2 that I remember (the big blade one and the 4 armed statue) ...

Its hard to tell where to jump to next when climbing and the hint system for where to go next is very bad, its way to general. 
 
Other than that i personally felt that the tougher armored enemies made no sense.

Cover can be a little too sticky sometimes and it's sometimes really hard to tell what ledges you can jump on and what ledges you can't.

A section that really grated with me was the ice caverns. You're kind of just told to go explore them, for reasons that are never really made properly clear. It felt like a lame excuse to stick in an extra section. Which is a shame, as the rest of the game flows so well.

" @TheHBK: The bad guy was not likeable? I think you're missing the point if that's a fault in your mind. "

" @Bucketdeth: jeez, he's dying, can't you cut the poor guy some slack! I bet you cant look sexy ALL the time! "

I just wrapped up the campaign last night.  The only thing I didn't care for were the enemies that were effectively walking tanks.  Although, the headshot that takes off a hat or helmet instead of drilling the guy through the noggin got a little old towards the end there...

started it earlier, 3 hours in and 33% done, and its an amazing game, but flawless? please... remember that bug in the beta quicklook where Ryan got stuck in the stairs and freaked out? Happened to me in single played, got stuck in a washing machine (lol?) and had to die and re-do the area. The game looks AWESOME, but theres still quite a bit of clipping issues for example, and some animations look downright awkward, like drake jumping after a swing. It also starts amazingly, and then loses a bit of steam (in my opinion) in the early jungle levels (too similar to the first game), then picks up again in nepal, which is where i left off, chapter 8. Im loving the game, and will probably finish it between today and tomorow, but its far from flawless. One of the best games this year tho, easily (some would say the best even)

I remember a few bugs actually, one where I got totally stuck in the environment and another where I fell through the world when trying to take cover.
 
Other than that and the already mentioned not-so-obvious-where-to-go-platforming, I can't think of anything. Great game =)

My main problems is that the cover system can be a bit janky at times and that's pretty much it. Also I have no trouble on the linear platforming, the game wasn't supposed to be complex so if people want to play a more in depth platformer then go play tomb raider or something.

Cover was a little wonky, Camera was a bit fucked up in some spots 
 

It's console specific.

the multiplayer