I completed all the Spartan Ops on legendary and i didnt complete the weekly challenge for Episode of Legend. I’m not sure if this was a glitch or something, but i was wondering if i was going to have to do them over again? They were pretty annoying the first time solo.
I’m also having this issue, All Ops have the Legendary tag but no challenge complete or XP 
I’m not sure if we have to complete all solo or co op not both
Same here. It’s probably a bug, this game and the latest version of Waypoint have quite a few.