Solo Campaign on Legendary (offline)

[nickfitz13]

So, I have finished the Halo 4 campaign offline and received all the achievements. Though, I have not gotten the accommodations or Mark VI armor and Visor. I have seen that you have to be online when you complete it, but, I have credit for some of the missions but not all. Even though I played the whole campaign offline. Why does it count 5/8 but not the other three?! 343 please try to fix this!

[Spectral Jester]

you gotta play it online, stops people cheating or altering there achievements offline