Good
Heard much about this, and got to watch it now.
SPOILERS
The way Nick was "treated" was horrific. I thought the cannibals would look more gruesome, however their howl was quite disturbing, especially from the "leader/big guy". I thought we would see the cannibals eating. The females looked "yuck". The way they use their weapons is gruesome and impressive, if that makes sense.
Find it a bit hard to believe that a cripple could go all the way to the top, take a lot of them out along the way, survive and be the hero and go back home, but I guess he was a good shot.
All of the actors did really well. S. Craig Zahler's writing in terms of dialogue is exceptional. The film has a couple of problems.
However, it's good, but not great.