Brovershield

Brovershield is an achievement in Halo: Combat Evolved Anniversary. It is awarded for completing any level cooperatively on Heroic difficulty. It is worth 20 gamer points. Receiving this achievement also unlocks the Standard Operating Brocedure achievement if the player hasn't completed a level cooperatively on Normal.

Trivia

 * The achievement is a play on the word "Overshield."