What's That Movie called....?

What's that movie called where a "old man" teaches his student Close quarter battle in the woods. After a few years, his student(main character) goes crazy and tries to kill the man. In this movie, there is a lot of close quarter battles. And torwards the end of the movie, he's on the run and he... show more What's that movie called where a "old man" teaches his student Close quarter battle in the woods. After a few years, his student(main character) goes crazy and tries to kill the man. In this movie, there is a lot of close quarter battles. And torwards the end of the movie, he's on the run and he goes on top of a bridge with lots of cops below him and then he jumps into the water while a sniper takes a shot at him. He meets up with his mentor and battles him. Lots of action and lots of stabbing and cutting. The man kills the student and the movies over. Can anyone recall this movies title? Thanks.
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