I hear a lot of reviews for this game from both critics and users saying this game is the best game ever and how it is perfect. This game is not perfect. It is really good. Definitely one of the best, but not perfect. The campaign is around 15 hours and I did enjoy it all the way through.
My one problem with this game is the storyline makes you want to keep going. You will want to play those 15 hours straight. When you do though realize how repetitive the actual gameplay is. Yes, the bow is fun to use, and sneaking around is fun, and I don't know if I'm the only one who noticed this but it's basically the same throughout the entire game. There really isn't a lot of variation in its core gameplay that makes it great.
I will say it looks great. It is a great looking, sounding, and fun game. I loved playing this game, but even I could see that there would need to be more variation to make me play it through again.