When you enter the place where you fight Dr. Von Katzenstein, go left, right and then left and you will come to an empty rooftop and another rooftop disconnected from the rest. You will get a promt, then you have to collect 4 or 5 planks, go back to the rooftops, then you will get another promt, and a bridge will appear connecting to the other rooftop. There you will fight Smogger (Storm) with a mechanical healer (Storm) minion

Community content is available under CC-BY-SA unless otherwise noted.