Get items avatar in Halo Reach

To get the helmet Jun for your avatar:

Kill 100 enemies in a row without dying

To get the helmet Jorge for your avatar:

Kill four enemies in 4 seconds in matchmaking multi

For 's helmet Carter :

Finish a mission of the campaign mode in legendary without dying

To get the helmet Kat for your Avatar :

Avenge the death of a teammate in matchmaking multi

To get the helmet Emile for your avatar :

Kill an opponent who tries to kill you with a sword energy