This level is quite hard because:
Send Luke towards the topmost Maximilian. The goal here is to bounce or roll through the ice so as to fall down on the far side and trigger the TNT (give it a few seconds). Use Leia to finish the level. If unsuccessful you can use Leia to pull the rightmost tower to detonate the TNT. Use another bird to finish the level but make sure you damage the structure enough for three stars.
See Video Walkthrough.