Spawn Quickly as a jet trooper at the AT-TE and run up the side of the ice mountain until the lighthouse is in full view. Jetpack over the wall of the lighthouse and take the base, eliminating any Droids nearby. Destroy the astromech Droids near your base and across the harbor to keep AATs from healing. Stay there and focus your fire on the nearby entrance to the ice caves. That's where many of them will gather. Don't forget to watch for Droids flanking your base too. If you're not careful, Droids will take the ice caves and you'll have to give up the lighthouse to save them. If everything goes as planned, you will surely win.