The only way to beat the giant Beta is via direct attack to the brain, forcing Ogre into a very perilous situation. Auctioneer risks his life to locate the brain, and Ogre uses Number 11 to take it out and defeat Beta.

He reunites with the Squad and celebrates, but his joy would be short-lived.
The little bit you fought back 
was pretty enjoyable.
مقاومتكم القصيرة كانت مسليّة
Eure vergeblichen Mühen
waren ganz unterhaltsam,
Disfruté de sus fútiles esfuerzos.
He disfrutado de vuestros
fútiles esfuerzos.
Votre acharnement
m’a bien amusé,
Ho voluto godermi la vostra inutile resistenza.
A obstinação de vocês me divertiu.
Ваше слабое сопротивление
было весьма приятным.