How do you defeat x1 on Star Wars battlefront elite squadron nds

Get the heavy type guns then, shoot him with the rocket launcher. once you're out of rockets, use the land mnes(by pressing y). when you've used up your land mines, you should either hit him with the lightsaber, or thow the lightsaber at him, so you don't get hit by his lightsaber. once you've killed him, he falls into the lava.
*hope this helps* oh, also, look below my answer, theres one that might help too.