The key to getting the three star for the stage lies on the position of the laser machines. Aim for the little blocks down below, use your power to move the laser machines.
This stage and shot takes many tries to succeed as it hugely relies on your luck. Once the laser machine machines to the correct position, it should deal tons of damage to all the blocks and the metal balls. You will then earn your triple mastery star reward.
Power Activation Point
Activate the power shortly after impact to get the most metal balls flying up.
First Shot Result
The laser machine kill the rest of the pigs and the metal balls. You need pretty high score to have a shot at obtaining the three star for the stage.