Make your hero Patapon a Kibapon and use Mahopons, Yumipons, Yaripons. Use the Ponchaka song when battling, then the Ponpon song. The Mahopons will heal your troops and inflict hard attacks. If done correctly, none of your troops will die and you will defeat Zugagang. After defeating Zugagang for the third time you will get something that marks the location of the hidden ruins (Ganodias).