Microsoft is officially announcing its new Xbox Mythic Achievements today, and they're already available for Xbox Insiders to test. Mythic Achievements work a lot like Sony's PlayStation Platinum trophies and are unlocked once you've earned every original achievement for a game.
"Mythic Achievements have already been added to eligible games you completed in the past, including Xbox 360 titles," says the Xbox team. "The next time you visit your profile, you may discover that some of your favorite games have already reached Mythic status."
