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Join The Spartan I Project today!SIP is here to help you achieve a 1750 gamer score, unlocking all of the armor permutations for both Spartans and Elites.http://www.bungie.net/fanclub/sip/group/joingroup.aspx
http://www.bungie.net/Stats/GameStatsCampaignHalo3.aspx?gamei d=114515165&player=CordlessCarI got 89 headshots but still no headshot honcho :(
They have to be done without missing a single headshot. If you headshot 9 enemies, then fail the 10th, but headshot the 11th, it won't still count towards the achievement. You have to do 10 straight headshot kills.
honestly i have no idea how i got 10 straight headshots when i did it. im usually the king of body shots
BrAdLeY
Easiest place for the achievement is the Beginning of The Ark campaign mission. Headshot all the brutes without missing and you will have it. :D