Moon of Endor 5-4 is the fourth level of Moon of Endor. To pass this level with three stars, you should pop all pigs and score at least 78,000 points.
Timing is key. Send Obi-Wan just under the chin of the AT-ST, giving him a knockout uppercut with his force. The AT-ST should rotate backward, eventually destroying the remainder of the level with its triple-shot laser.