When we’re surrounded by movies running on autopilot, it seems perverse to fault a film for trying. But there’s trying and then there’s trying, and The Revenant, Alejandro G. Iñárritu’s new revenge Western, indelicately treads the line between the two. Loosely based on the real-life bear mauling and survival of nineteenth century frontiersman Hugh Glass, documented in Michael Punke’s 2002 novel, this is an in-your-face exercise in iron-blooded macho perseverance. It’s 1823 and Glass (Leonardo DiCaprio) is assisting a hunting party led by Domhnall Gleeson’s blue-blood Captain, tracking down valuable animals pelts in the wilderness claimed by the Louisiana Purchase. When the company men…