They fire the panzerfaust with a FWOOSH, but Robo crouches down and evades.
The missile explodes at a nearby Combot with a KRABOOM. As the robot loads another missile, the other Combots began firing with a BRAKKADAKKA using their machine guns. They merely annoy Robo with a PING and a SPAK on his metallic body.
Robo pries the machine gun off his adversary's hands and shoot his head off with a BRAKKADAKKA.