Halo 4 Unlockables

Avatar Awards
Fulfill the requirements listed below to unlock new costume items for your Xbox Live Avatar.
UnlockableHow to unlock
Knight HelmetEarn the "Knight in White Assassination" Achievement
Platinum Mark VI HelmetEarn the "Wake Up, John" Achievement
UNSC Infinity HoodieEarn the "Not Some Recruit Anymore" Achievement
(0.1072/d/www3)