Stupid Chaos...
I understand the last battle of a game is supposed to be hard. And it makes sense he'd be a lot harder the second time than he was in Shade Impulse. But still-! Unlike Shade Impulse you can't just fight until you're a few levels higher than him and make it easier, since the player character level stops at 100 and Chaos is well beyond that. He can break you with one combo and take you out with one HP attack. Plus, you have to fight him /three/ times in a row, and your health and summon aren't restored after each stage. I must have tried him a dozen times before giving up. Maybe Cloud isn't the best character to fight as? Would it work better if I got Firion or Cecil up to level 100 and used them? I don't know. I like Cloud because in Ex mode his brave attacks are unblockable, which is pretty much the only way I can build up his bravery at all against Chaos.
Maybe I just need more practice...
Maybe I just need more practice...