Use the following trick to defeat the Zock faster in story mode. Keep your distance from the Zock until you can hide behind a rock. Make sure he cannot see you. When he gets close enough, pull out the beam saber and attack him. If you do not let up on your attack, the Zock will not get a chance to fight back. After a while, the Zock will be defeated with little or no damage done to you. Note: This requires practice and you may want to try to shoot him a few times with the beam rifle before you hide.