Star Reef - 3

Strategy
Choose Matilda in Druid, Bomb in Cannoneer and The Blues in Rogues. Heal with Matilda if the birds' health are not full and if they're full, attack with her. Then attack with the others (All attacks focus on the Necromancer first, then the Zombie and the last one, Ship's Kobold). Repeat this over until you win or either lose.

In Summary
Necromancer can use Life Leech to heal himself, so he must be defeated quickly! The Ship's Kobold can stun you, so watch out for that too.