It is really easy all i needed to get most of the way was max knights and the increased damage or zeus if i felt damage wasnt enough then i used sammuris for the boss i maxed the three islands with sammuris then used two islands to wack its backup then used the final for a 25-1 fight using heal instead of zeus cause i was feeling smug
 "The Great War of Prefectures"){kind=icon}
 "Doodle Devil"){kind=icon}
 "IndestructoCopter"){kind=icon}