This level is hard because:
Sen Han at the wooden legs of the first tower, shooting through the first perched mynock pig at the stone ceiling above. The two stalactites can be brought down via Han’s laser blasts and cause massive damage. If necessary, use Leia to pull the perched mynock in the middle of the ceiling, and use Han one more time if any villains remain, but make sure you have a massive damage for three stars. This strategy is extremely difficult. We have a better strategy.
Send Han towards the top Mynock Pig, shoot the iron bars on the top of the far tower. They may be ricochet to the two furthest Mynock Pig. Laser blasts will ricochet back to TNT and damage most of the level. If necessary, use Leia to pull the perched mynock in the middle of the ceiling.
See Video Walkthrough.