Please help with getting Overkill Achievement in Halo 3

[master chief]

PLease ppl help! Its my last achievement!
Go to ur dashboard, change ur language to the very bottom one and go on Lone Wolves, before starting press X and then select the very bottom one, and search away! My GT is SkySnappa so plz dont kill me till i get the achievement

 

[Sean O]

can dooooo
my gamertag is Flame Warrior 1 send me a friend request