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.
Japan can recover as long as we're around.
يمكن لليابان أن تنهض مُجدداً بوجودنا
Mientras estemos nosotros,
Japón podrá recuperarse.
Mientras estemos nosotros,
Japón podrá recuperarse.
Tant que nous sommes là,
le Japon pourra être restauré.
Se ci siamo noi, 
il Giappone potrà risorgere di nuovo.
Podemos recuperar o Japão depois.
Япония оправится, если мы будем живы.