On this level (with the DOMs) chose the Beam Rifle. When you start, go behind the white base and kill the DOM there. An intermission sequence will begin. After that, you will have to go back to white base and jump on it. Switch to the Beam Rifle then target (not the Zoku II) and shoot them down. They will not shoot you as much on white base. Note: If one gets too close to white base, hack them with the Beam Saber.