Jeremiah Johnson... certainly at the end of the movie.
At the beginning he was quite a tenderfoot.
At the start he was lost and confused it seemed... probably new more than most do today that think they know 'some'... in the middle I say he was very good 'survival character' in the end a ruthless killer out for revenge/protection/death wish

but also an expert of the area.
My .02 at least.
-Todd