Halo

Halo fans are notoriously hardcore, but even in the Halo community, there are only a hardened few who are willing to  attempt the seemingly impossible: unlocking every achievement in each Halo game (that has achievements and includes map packs) so far. That includes Halo 3, Halo Wars and the recently released Halo 3: ODST. According to Halo Waypoint creative director Jason Pace, the number of people who've achieved that feat is less than 1...