Aim high and take your shot, you want to break the line between the bomb to the right and the metal ball. The goal is to land and move the laser shooting ball a bit, the laser machine will kill the majority of the pigs.
Because you will have breaking the line, you will not be using your light saber power for the first shot.
First Shot Result
The second shot is needed to kill the pigs to the left. You can either aim for the bomb or aim for the spaces to the right. The goal is to both ignite the bomb and use your laser sword to deal the most damage possible.
Second Shot Result
You will need to both kill all the pigs and destroy enough blocks to qualify for the three star mastery.