I'm now 3/3 in my last 3 Ragnaroks, and 3/6 overall (without elixirs). The fight isn't too bad once you have a plan and can stick to it--though I probably wouldn't be faring so well without the lucky Gaia roll. Ironically, I haven't even been using her damage reduction ability. I time the Rages so it's never actually needed, and instead rely on her for Intercept + her self-heal. I save the damage reduction ability in case the boss gets dizzied when the Intercept is up.