Ill tell you the only few reasons why it's not a perfect game (no spoilers)
My favorite part of this game has to be the stealth element. Being a huge fan of splinter cell, hitman, and thief for so many years, I think this is near to the closest you can get in terms of it feeling like real life stealth. Of course people are going to complain that enemies would obviously see you from a distant but trust me it's not a bother and it's a video game for crying out loud. The intensity in this game is truly awesome.
The only reason this game is not a 10 to me is for the button mashing and cinematic scenes that I wish naughty dog would of left behind with uncharted as well as my original point of the whole unoriginal post-apoc. idea but even so it's really not a big deal and everything else drowns these aspects. The people who are trying to say its sloppy and boring either own an xbox or just feel like bashing a hyped up game that actually is a near perfect game