I just saw it. Very entertaining. I'm a fan of the old spaghetti westerns and it certainly pays homage to them. It also has a bit of the blaxploitation feel to it, but that's part of the director's style. It's not going to be on your list of greatest movies of all time but it's a lot of fun to watch. I recommend it. Oh, on the use of the "N" word, it's appropriate within the context of the movie. To be clear I'm the kind of guy that has never used the word conversationally and find it offensive in everyday speach. It was used for effect and served a purpose in the film.
"As I walked out the door toward the gate that would lead to my freedom, I knew if I didn't leave my bitterness and hatred behind I'd still be in prison."