I remember there was some controversy when this movie came out because people thought it was needlessly anti-wolf and that it promoted wolf killing. Having finally seen the movie, I disagree. It's a survival movie that has wolves as an element, but I don't think it glorified killing them or turned them into villains. They were just being wolves.
I thought it was pretty well done though there were a couple of slow parts. The ending was definitely unexpected, but a welcome change from the usual Hollywood crap.
I highly recommend this movie. It certainly motivated me to hone my survival skills and to put survival gear in my car in case it goes off the road and some wolves are after me.