Very interesting plot, I didn't predict the ending at all. I think the acting is good, loved Michael Caine, Morgan Freeman, everyone, but I especially loved Joseph Gordon Leavitt-. Batman's voice still bothers me but I think I got over it as I got more and more into the story. I like how it unfolds his development and how he rises for his come back. It gives us a lesson about courage and not giving up and our motives for achieving our life goals and succeeding. The darkness, violence and gore is what makes me rate it a 15+, I would be cautious about taking kids younger than that. The emotional and mental torture in the movie makes it a little disturbing and could be scary for younger audiences.
Don't stay after the credits, there is nothing after that :)