Bropocalypse

Bropocalypse is an achievement in Halo 4.Halo Waypoint - The Halo Bulletin: 08.22.12 It is obtained by completing any campaign mission Co-operatively on Heroic or harder.
==Trivia==
*This achievement is based on Barney's saying in "How I met your mother" Season 3, episode 12.
==Sources==
Category:Halo 4 Achievements