I completed Story mode with the second character and then tried the third character. She gets a completely different final boss to the other two characters I’ve tried and it’s much, much harder. I finally managed to work out how to do its first form (though not without taking a lot of damage every time), but the second form seems to spam out attacks that are completely unavoidable. I can reflect some of them, but don’t have enough power to shield myself for very long and soon die. I gave up in the end. There must be a way to do it, probably by just using the shield for the shortest possible amount of time, but it felt a bit too hard to me last night.