User blog comment:Argresch/Help/@comment-4666505-20111211150438/@comment-4085927-20111211151204

This should help a lot. If you have lots of stars use the Star Cannon, if not use the Minishark with the best ammo you can get. Also cover a large section of the Underworld with blocks so you wouldn't fall in lava. Also use Ironskin Potions and Accessories that provide defense. Then keep attacking and running back from it.