i could understand if it glitched up and gave me it 2 times before i was supposed to get it, but i have 50 ach and 1115 gamerscore and it wont give it to me, its becoming difficult to do anymore acheivements, i did all metagame ones, got all skulls and terminals in campaign, got mythic pack 1 and got the skulls for them, like i should definitly have it by now especially since ive already had it twice .... if anyone knows how to fix this problem please get back to me