I'm in Chapter 5 on Xbox 360 so I'm playing as Hope. Hope has 550 HP and Lightning has 680 HP. Every time I go against the big Feral Behemoth (the purple one, not the others) it uses Heaves and I die instantly. I watch tutorials and the all have 600+ HP. I go to the Crystarium and I maxed out everything for him and I cant move on. Can someone help me?