I got "Legend" achievement Where is my Helioskrill

So a friend and I have done CE, 3, and 4 on Co-op, and I have done 2 on solo with bandanna and scarab skulls on. After finishing Halo 4, I got the Legend achievement and right away I went to Halo 5, the pack was not there, I didn’t think much of it sense I just got the achievement it might take a bit to register. The next day I got on and checked again, wasn’t there. I went to Halo waypoint and check my service record, it said all the campaigns were completed on legendary, and there were completion times. Is there something that I have missed because I would really not like to run through those campaigns again.

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> So a friend and I have done CE, 3, and 4 on Co-op, and I have done 2 on solo with bandanna and scarab skulls on. After finishing Halo 4, I got the Legend achievement and right away I went to Halo 5, the pack was not there, I didn’t think much of it sense I just got the achievement it might take a bit to register. The next day I got on and checked again, wasn’t there. I went to Halo waypoint and check my service record, it said all the campaigns were completed on legendary, and there were completion times. Is there something that I have missed because I would really not like to run through those campaigns again.

ODST as well?

You do not need to complete ODST to obtain the Helioskrill

Anyways I waited for about two more days and I found it in my armor and helmet sections so I guess this post doesn’t do much good now anyways.