You take off his last leg. You can't help but think this is getting to a Monty Python level of ridiculousness. 

ATTACK!!!

Left side of his head!     Go for the eyes!     Right side of his head!
Attack his left arm!     Go for his circuits!     Attack his right arm!
KICK HIM  IN THE BALLS!!!     
Take out his left leg!     Take out his right leg!

robot fight 19