this is my story and hopefully someone from the 343 team or halo 4 fans
can help me 
November 6th finally came and everything was perfect. I put all of the codes in everything was working fine. I finally got onto halo 4, excited as i was, everything was there, all of the specialisations, the emblem, everything that came with limited edition.
A month later, still everything was fine, the latest halo 4 update came along, obviously i was going to update it and i did so. As soon as my xbox was restarted i logged on and went onto halo 4. I played a few games of matchmaking and wanted to check my K/D ratio and by mistake clicked on the specialisations and noticed all of the 6 specialisations were gone except operator and wetwork.
I’ve looked all over the internet for solutions to fix my problem and i did all of them. I redownloaded the Specialisation alpha bravo, i cleared my cache and redownloaded, i completely disconected my xbox, trust me; i tried everything!
I still only have wetwork and operator and i am patiently waiting that hopefully one day that i log onto my xbox the rest of the specialisations will be there. It’s been a few days now and still nothing…
Guys, can you please help me. I’m a huge halo fan and it would be a great help if there is a way we could fix this…
Thank you guys and have a great week xx