All skull locations on the mythic map pack... assembly skull, citadel skull, heretic skull, longshore skull, orbital skull, sandbox skull and other secrets to the new achievements in halo 3. hidden secret easter egg gold silver 25g gamerscore vidmaster challenge bungie 6/6 six out of six find 9-25-08 9/25/08 how to rolld roll'd barack obama john mccain terminals recon helmet montage cheats prank halo 4 four DLC release date preview