When you have completed the indicated task you will receive the corresponding Avatar Award.
Unlock Carter's Helmet:
Clear a Campaign mission on Legendary without dying.
Unlock Emile's Helmet:
Earned a Bulltrue medal in either Multiplayer or Firefight Matchmaking.
Unlock Jun's Helmet:
Kill 100 enemies in a row without dying in either the Campaign or Firefight.
Unlock Kat's Helmet:
Avenged a teammate's death in Multiplayer Matchmaking
Unlock Jorge's Helmet:
Earn a Killtacular in Multiplayer Matchmaking.
Added by: Sanzano Sep 21st 2010, ID#6281