This stage features a pretty simple shot if you know what to do. Aim for the little portion of the chain shown in the picture.
Power Activation Point
When you are about to become parallel to the wooden blocks. Start shooting out your lasers. Your goal is to break a couple of the wooden pieces while breaking the chain to the right.
First Shot Result
The metal balls falls to the left after you break the chain. The metal ball then kill most of the bat pigs to the left. The bomb that you trigger kills the pigs to the right. You will then earn your three star rating after all the pigs are dead with your single shot.