Gaea's Champion

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Complete all episodes in Part IV with an S rank on Hard.

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As recommended in my previous guide, the best way to gain S ranks are with the obliterator gauge (see my other guide on details on how to unlock this gauge).This is much easier than the "Deity" achievement, and there are only four episodes to do to get this. That said, these episodes are still tricky, so go with caution. See "Deity" on my previous guide for more info on the best way to get S ranks.