The Eurogamer review speaks of a totally scripted, linear path that grants death to the player should they seek to deviate, or gives them a push toward the "correct" goal if they are ever so slightly off. It discusses moments where objects cannot be interacted with until "the correct series of cutscenes plays out" and mentions that there are sections where player control is taken away in favor of a rote push forward. Maybe the most serious criticism for me is about simply having to press a button to watch Drake solve a puzzle.
It's not about having multiple objectives, or side missions, or nonlinear mission structure, it's about having full control over your character and their actions at all times. I don't like the movie-game thing much. UC is the only series I can really stand it in, and that's because it does it so damn well.
It's not like I'm saying "preorder cancelled!" here. I was just real excited after the GT review, which praised better puzzle solving and pacing, and then took a step back again after reading Eurogamer's impressions to realize it's probably just more of the same.
I'm not saying "more of the same" is bad, was just hoping for a bit more beyond that.