Here's the most basic way to put it: It's a classic western. If you truly liked the spaghetti Westerns or more classic testosterone laden flicks like the Dirty Dozen, or Death Hunt---- you will enjoy this film. If you don't like the old school manly tales were a cursing, drinking, fighting, every-man wins the day rather than some roid laden pretty boy---- you won't like this movie.
That was the litmus test amongst everyone that saw this film. I know a lot of people that hated it, but they never liked the Good, the Bad, and the Ugly or Lonesome Dove. However, my friends and I saw this film in the theatre two days in a row (something we never did before or since).