With your tip, and about 100 more tries, I finally beat it. Then I thought I was in the clear, and I got to the storm battle and chase... only to find ANOTHER PLATFORMING SEGMENT! Did I mention I suck at and hate platforming? I wanted to play an RPG, not this bullshit! ARRRRGGHHH!
(Okay, rant over, after way too much time I managed to get past that section too and finally get to the end of the game. I just wonder if I need to download anything else to access all of the postgame stuff or not)