Standard Operating Brocedure
From Halopedia, the Halo wiki
Halo: Combat Evolved Anniversary
In Halo: Combat Evolved Anniversary the achievement is awarded for completing any campaign level cooperatively on Normal difficulty. The achievement is represented by two MA5B assault rifles over the difficulty shield in its icon. It is worth 10 gamerscore.
Halo: The Master Chief Collection
- In both titles, if a player earns the Brovershield or Bro Hammer achievements without this achievement already earned, they will be unlocked together.
- The achievement is a play on the term "Standard Operating Procedure."