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