Unlock "The Apprentice" with Darth Vader in Arcade mode. Then with "The Apprentice", play Story mode. In the beginning of every level, walk all the way to the wall at the beginning of every battle. Resist the urge to hit your opponent. Once at the wall, make sure your back is facing the wall. Your opponent will either be cautious or will run toward you. Once in grasping range, use the secondary grab to slam them across the wall. Make sure it is not the X + Square combo. Do this multiple times against every character Except on the final stage rounds, you should always avoid the edges. You will unlock the honor after hitting the wall fifty times.