People who are mocking the violence (action sequences) in the movie and lack lustre storytelling must first accept the fact that Sylvester Stallone is 73 years old, and throughout the timeline of Rambo as a character on screen as grown a whole lot. An underdog making the the home run always appeals us but this movie was not about that, it's plain hit last revenge, and so all the gore. The things Rambo pulled off( building tunnels throughout the ranch, maintaining it and then turning it in to a labyrinth single handedly) shows how much experience he has gained over the years away from home. Gabrielle was the one part of his life with the help of which he could lid the burning inside his heart, he could kill the pain of years of losses suffered. So the movie clearly maintains its front, good screenplay from the aged actor(warrior) who clearly turns his palsy into his advantage. With age not on his side, Rambo clearly constructs the whole Chakravyuh with experience. And one thing was always clear from Rambo movies, you don't mess with John Rambo. He knew he had nothing more to live for and so the last blood. Live for nothing or else die for something we're always his words.