Speechless about it..just amazing
The problem is I couldn't stop playing I'd say I'll play for an hour for an example an then "another hour just quickly" and the night goes on..you'll feel like you achieved something when you finish it "WHOOHOOO FINALLY"
last but not least, my advice is to enjoy the game as much as you can, use the new techniques in the game example: the zip line, the hook blade, the eagle senses, even I felt that the fighting technique was better than that of "assassin's creed:Brother hood"
To sum it up: if you didn't play an assassins's creed game(especially last 2 parts) you're missing a hell of game in video games world.