Halo 3 : My Achievements(6)

Cleansing

Completed the fifth mission of the Campaign. - 30G


Assault

Completed the fourth mission of the Campaign. - 30G


The Road

Completed the third mission of the Campaign. - 20G


Holdout

Completed the second mission of the Campaign. - 20G


Landfall

Completed the first mission of the Campaign. - 20G


Fear the Pink Mist

Killed 5 enemies with the needler in a ranked free for all playlist or in campaign. - 5G