Military Police Helmet
To unlock the Military Police Helmet, you must have accumulated 450 "Halo: Waypoint" achievement points. Your "Halo: Waypoint" points are the cumulative total of the achievement points earned in every Halo game on the Xbox 360. For example, if you had 200 achievement points in "Halo: Reach," 200 achievement points in "Halo 3" and 100 points in "Halo Wars" your "Halo: Waypoint" points would be 500. In addition, you must also have completed the "Halo: Reach" campaign on normal difficulty. Once the Military Police Helmet is unlocked, you can earn two attachments for it to further customize your look in "Halo: Reach."
Military Police Helmet Attachments
To unlock the CBRN/HU/RS attachment for the Military Police Helmet, you must have 900 "Halo: Waypoint" achievement points. In addition, you must also have earned the Pink and Deadly achievement from "Halo: ODST" by killing 10 enemies with the Needler weapon. To unlock the HU/RS/CNM attachment, you must have earned 1,400 "Halo: Waypoint" achievement points and the following two achievements: "Fear the Pink Mist" from "Halo 3," requiring that you kill five enemies with a Needler, and A Spoonful of Blamite from "Halo: Reach," where you must kill 10 enemies with a supercombine explosion.
CQB Helmet
The CQB Helmet can be unlocked in "Halo: Reach" by earning 900 "Halo: Waypoint" achievement points. In addition, you must complete "Halo: Reach" on Heroic difficulty or higher. As with the Military Police Helmet, once the CQB Helmet is unlocked you can unlock two attachments to add to it.
CQB Helmet Attachments
After you have earned 1,400 "Halo: Waypoint" achievement points and completed ODST on the Heroic difficulty or higher the HU/RS/CNM attachment for the CQB Helmet is unlocked. To earn the UA/HUL attachment, earn 1900 "Halo: Waypoint" achievement points and complete the following achievements: complete "Halo 3" and "Halo: Reach" on Legendary difficulty.
Security Chest Piece
The Security Chest Piece is the final armor piece to unlock in "Halo: Waypoint." To unlock this armor piece, you must have 1,900 "Halo: Waypoint" achievement points. In addition, you must also have completed the Yes, Sensei achievement in "Halo: Reach." This can be accomplished by being the first player to defeat an opponent in any "Halo: Reach" online multiplayer game mode.