The hardest part about this stage is getting the position and timing right for your laser.
Launch the first shot at the connection part between the bottom metal and wooden piece. You want to impact the metal piece while using your sword power to break the majority of it.
Power Activation Point
Tap your sword as soon as you hit the metal blocks.
First Shot Result
Launch toward the green armor pig. You have to be quick in setting off your subsequent laser shots.
Second Power Activation Point
Tap for your laser power as soon as hit the green jedi pig. All of your shots will have to land to kill the pigs on the planet. Tap the laser at the middle of the bottom triangle block. The position really matters for this stage.
Second Shot Result
Your lasers plus the falling debris from space kill all the pigs. The three mastery star is then yours once all the pigs are confirmed dead.