-The Gameplay is the pinnacle of the stealth Genre -The Story is brilliant -It has some of the most unique and best boss fights -The last cutscene with "The Boss" is one of the highest peaks in gaming.
The most fun I had with a Videogame since a while. The Gameplay is fun, the Story intriguing, the Sidestories are very unique and the 2 Protagonists are also really great and loveable.