The key for this shot is to land someplace near the wooden or the ice pieces at the top platform. The hardest part is to get the timing of your laser shots correctly.
Power Activation Point
Shoot out your lasers as you are about to land either the wooden or the ice piece. You need the lasers to pass the small wooden house blocking the path between you and the snow. Your goal is to destroy the snow so that the entire pig vehicle slides down.
First Shot Result
After the snow is destroying, the pig vehicle slides down and kill all the pigs below. You then will earn the deserved three star rating master.