The best game I have played in a while. Very immersive and addicting.
The voice acting is perfect and the way your character moves and interacts with the scenery is the best I have seen in any game so far. Just the right amount of cut scenes and play time. The story is immersive and the characters are loveable.
There is a lot of optional tombs/loot that you get, but it is all to heighten the story experience, finish the game with a higher percentage, and for achievements. You can set the difficulty of the enemies you fight and that seemed really cool to me. If you're stuck on a certain part due to enemies, just turn the difficulty down, and continue. It doesn't take away any achievements and it is still a bit challenging.
I would HIGHLY recommend playing it.