Got this game a few days ago. While it's visually stunning, it is very repetitive. And the fighting system absolutely sucks. Luckily, you're supposed to avoid actively fighting people.
That's the difference between God of War and this game: in GoW, you just try to kill everything that moves, and it's just an all-out head-on fighting game. With AC, you have to avoid fighting as much as possible.
But the whole Viewpoint/spying/assassinating thing does get old very quickly.