Halo 5 legendary completion

Games Halo 5: Guardians
1

I completed halo 5 on legendary while I had no WiFi for several days. Now two months later I still haven’t received the achievement on Xbox but waypoint shows that I have full ledgendary completion. Anybody know how to get the achievement to go through?

2

Something tells me you must be connected to your network and have an active Gold subscription in order to receive the achievement. I could be very wrong, though.

3

Hey OP, looks like 3 of the missions didn’t register times against them for some reason:
https://www.halowaypoint.com/en-us/games/halo-5-guardians/xbox-one/service-records/campaign/players/fairhades35

  • REUNION
  • SWORDS OF SANGHELIOS
  • ALLIANCE
    You may need to run those missions again. You could try loading them up for a minute and the save / quit, see if it registers or try from the last rally point, if not it would probably require re-running.