Desert Island - 1

Strategy
Warning: Be careful. The Lightning Pig can activate "Fully Charged", which all attackers can recieve 51% damage for 2 turns! Use The Blues as Tricksters so you can dispel one pig each.

Choose Matilda in Druid, Chuck in Lightning Bird and The Blues in Tricksters. Use Chuck's secondary skill on Red (if in battle) or The Blues every turn. Use Matilda's secondary skill when the Birds' health is full. Then attack every turn with them (Desert Pigs first, then Lightning Pig) Use the Rage Chili to Red when it is full. Repeat this over until you win or lose.

In Summary:
Lightning Pig can activate "Fully Charged", so beating him first is best. Desert Pigs can reduce attack power, so watch out for those too!