Missing spartan ops achievements?!

I completed the 5 spartan ops chapters the day after halo 4 came out (when they had all the server issues). For some reason it has not awarded me with the achievement for completing them all Ben though it says on the game I’ve done them all in legendary and on my waypoint spartan ops career it’s says I have complete them.

I have also re-done the missions and still no change.

Does anyone know what I can do about this or who I can contact because so far I have been trying the @halowaypoint twitter but have had no reply!

Thanks!

For the acheives you have to do them on legendary. To do legendary you have to change the difficulty and do it by yourself or with some friends. Matchmaking is set to heroic only for whatever reason. The acheivement to play through them all includes the ones that aren’t out yet. So you will have to wait for them to be released.

I’ve had the same issue as the OP, done all 5 chapters for Episode 1 on legendary and nothing on the cheevo front.

Huh, strange… put Halo on this morning after playing it last night and it appears 40G has added itself to my Gamerscore and the achievement is showing up as acquired last week.

However now I’m finding some of the challenges are glitched… as in I haven’t met the criteria to complete them but I’ve been awarded anyway…