A costume modeled after Final Fantasy XIII's surly heroine, Lightning, is hidden in fellow Square Enix offering The 3rd Birthday. To unlock it, all players have to do is sign up for the game's official members site after completing the game -- or, if you're a madman, by beating the game 30 times.

Obviously, linking up your game with the members site is the easier way to go, though this method still requires users to complete the game and earn several "stamps" (special awards earned for performing various social networking tasks) on the site. Still, 30 times is a lot of times. We're not sure there's any game we've ever beaten 30 times in our entire gaming careers -- especially not a big ol' Square Enix game.

This article was originally published on Joystiq.

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