I've played Kingdom Hearts Final Mix (the HD Remix version) up until the boss fight against the giant gargoyle on the volcano (from Fantasia). Damn. Is. It. Hard. I was able to breeze through the rest of the game no problem (I'm playing on the easiest difficulty) but for the life of me, I can't beat this boss. The closest I was to beating him was getting him down to the olive green health bar. I stay behind his head and attack away. Then comes the fire blast, which I can't recognize a pattern or any indications it's coming until the last second, when it is too late.
I have Sora leveled up well and with the Olympia keyblade. I can provide specifics like what level I am and what equipment I'm using, if anyone is interested in helping.
Does anyone have any tips? When to know when he is about to use his fire attack? If there's a more suitable keyblade than Olympia (maybe the Oathkeeper)? Any bit of advice or help would be much appreciated.