You should take 6 Stamina Recovery Jars and the top 5 Vitality Recovery Jars into battle against Mantis. You must have 5 King Attack+ cards and one Touch Nipples+ card in your deck. The character must have all the mantis equipment for the attack boost (sold at the brothel after you find the king's axe and give it to the king). Also the character should have more than 400HP (a couple of items from the normal equipment shop). If you do it right, the King Attack+ will deal 900 damage and the Touch Nipples+ will deal 1250 damage.
