NMPD HQ (achievement)

NMPD HQ is an Achievement in Halo 3: ODST. It is awarded for completing the level in Campaign on Normal, Heroic, or Legendary and unlocks Romeo for use in Firefight. It is worth 30 Gamerpoints.

It is represented by an olive circle, with the Marathon symbol imprinted in it, with a Sniper Rifle with its barrel bent backwards, in front of it.