If you find Spring Fever charing forward take it out before it's allies arrive at it's rescue. Next, defeat Sunrise Lady before it starts healing it's injured allies. Planet Beetle will shoot from behind and make sure it hits the targets. Use one of you Insector as a decoy against Planet Beetle. Preferably Dung Roller or an Insector that can heal. The king won't go down easily so make sure you have a few Insectors remaining at the end.