It was too short. They could've stretched out the kill scenes and made the kills more dramatic and gory. I enjoyed it very much but wished for a much higher death count like in Rambo 4. I also felt that it wasn't as disturbing as Rambo 4.
The shower scene was completely slipped over when Rambo entered the cartel's home the second time. It would have been nice to see him kill that brother.
It was a very satisfying movie to watch nonetheless. 3/5