I was so stressed out and pretty much having heart attacks, sneaking and running around those phantoms. Hardest dungeon I've ever played and having to go there half a dozen times was so tough. It was so satisfying in that 6th go through when I could just kill them with the Phantom Sword. Also I collected all of the Power Gems so I had a Level 2 flaming sword so that was cool.
The Oceans were okay, especially once I got all the cyclones, but I kind of wish I could have just let go of the stylus to let my hand rest instead of being worried about hazards and whatever. I wish that the boat also had more hearts instead of always having four hearts.
The boat can have more hearts. You just need to equip a better parts. I was super lucky when I played and got a few of the gold set, so I hat like, seven.