I'm about 65% of the way through. I think the story is a lot more important in this game than Uncharted and maybe even Tomb Raider. As for gameplay, it's not really anything like those two games. Stealth and melee combat is much more prevalent and it's virtually mandatory in some instances.
And due to low ammo and no health regeneration, the gun fights that do appear are obviously going to be of a slow and careful pace. So don't expect it to become like Uncharted or Tomb Raider, at least to the point that I've made it to. The action does get more intense, but I think you have a general idea seems of it seems to be the same. If you don't like it now, you probably won't like the rest, I think.