Halo 3 Planet

Security Armor


Security Shoulder Armor

You unlock the Security Armor in Halo 3 by getting Gamerscore in the game (ie: Unlock achievements). To get the Shoulder Armor, you will need to rack up a whopping 700-850 GS (it seems to vary for some reason).

Note: There is a known glitch in the game that will not allow players to unlock the Security Shoulders sometimes.

Halo 3 Marathon Helmet

Marathon Helmet

This might be one of the last pieces of Armor you unlock in the game, as it requires all of the achievements in Halo 3 in order to unlock it. That’s right. You need 1000/1000 GS on Halo 3 to unlock the Security Helmet.