Overheat and destroy 50 gold LEGO bricks.\

You will get this well after one run through of the story mode, most likely while doing replays for minikits or Ground Assaults. Any yellow bricked object will need to be shot repeatedly either by a vehicle or by a group of troops under your command or also a battle droid you have grabbed using the force. Destroy 50 gold bricked LEGO objects to unlock the achievement.