The game is good. Really good. But if you played the first game this will leave a bad taste in your mouth for sure. Then you take a sec, look back and realize that this story was not a "revenge is bad story." I'll leave it up to you to figure it out but play through the game and feel for everything it has to offer. Feel it and experience it, be angry, be sad, and then be fulfilled.
P.S. you have to play the game on the hardest difficulty to really enjoy it. Otherwise it is too easy. I played it on normal and regretted it.