• No Freeze or Bottle Rockets on the Guardian Diggers.
• Collect every item you can before you fight the moles.
• Have the enemies surprise attack you every time.
• Don't use any Life Noodles.
• Apologize to each Guardian Digger every time you attack and ultimately defeat them. Explain that you don't mean to remove them from their natural habitat, but it's a necessary evil in order to save the world. Maybe if you can make them realize that Giygas is going to crush them if you don't succeed, you can get them to cooperate.