Gamertag: Jawstheme
Check my achievements. Completed legendary on solo campaign. However waypoint and my service record on Halo4 states heroic was my highest completion difficulty.
Why is this not updating?? It’s like I got a promotion at work yet nobody wants to acknowledge it.
Confused.
You need to be connected to XBL to unlock the commendations for the Legendary campaign. I just looked and you have no Legendary campaign commendations done. Unfortunately, you’ll have to give it another go.
I completed legendary offline over the summer to pass the time as I was moving and had no internet. So because I did so not connected to XBL I do not get online credit for it? That seems silly. Or is there a reason why it’s that way?
I know, trust me I know. But I believe it’s that way since you unlock the MK VI armor for completing the commendations.
My suggestion? Do it with a friend. You’ll finish the campaign again, have fun, unlock commendation, and get more armor. 
I’ve never got to beat legendary with a friend because none of mine like Halo. They’re all COD nerds. I do wish though.
I may just give it a go solo. But this whole thing honestly makes me feel burnt out on the idea now.
Don’t give up! Go check the Recruiting section, there’s tons of people in there that like the campaign. I’d offer to run it with you but I have terrible co-op lag since I live in Europe.
Or just do a mission a day or something. It’s not so bad, I promise.
Trust me, you aren’t the only one(me too, I’m literally dying from doing legendary solo LASO again, so now I’m just sticking with normal legendary(which is still a tiny pain)
Don’t give up and I suggest you follow snickerdoodle’s instructions.