As the title says, I completed the Halo 5 campaign on Legendary with two friends - we “LAN’d” it, as in we all played together from the same location on the same internet connection. During the end credits, they both had all the relevant achievements popping for finishing the game on Legendary, as well as for on Normal and Heroic as is standard with Halo games when you finish the highest difficulty. Meanwhile I didn’t get any of them, despite getting all the mission achievements as we progressed through the campaign.
I’ve already tried the usual sign out/sign in, hard reset of console etc, but nothing seems to get them to pop. I haven’t yet tried to play through the final level again to see if that will give it to me as we were all Halo’d out after a marathon 10 hour session to get through it, but I guess I can do that if it’s the only option. I’ve checked Waypoint as some players suggested for this issue in MCC, to check whether it hadn’t registered a mission properly but all 15 missions have been completed co-op on Legendary so no idea what the issue is.
Have tried searching the forums but there are about 10 new posts/comments every minute and I can’t find anything relevant using the search function so here’s hoping someone else has had this problem and figured out how to fix it! And that this post doesn’t get buried in the avalanche of other posts 