Hey guys, so I just beat the Halo 4 story on legendary solo. Great story by the way! It was the best so far! Only one thing. The challenges for completing them on legendary say 0% completion but I clearly completed all of the missions on legendary. It says so on my achievements. I checked on the waypoint and it says I have not completed it it. One of the people I play with also say I get the Master C helmet original. I really wanted that as well but I don’t. I was wondering if there are problems with the story challenges because I have not got not even 1% completed but I got 100% on legendary solo.
Were you connected to Xbox LIVE when you played through the campaign?
You most likely completed the campaign offline.
You had to be online in order for the challenge to count towards your commendations.
Sadly, you either have to do it again or ignore the challenge.