Achievment not showing up

Games Halo: The Master Chief Collection
1

I beat all the missions on legendary but didnt recieve the achevment for it. On my consolenit says i have beat them all on legendary but on my service record it says i am missing 7.

2

Hey OP, from what I can see on your service record you are missing 2 co-op completions. If you do the following levels again cop-op in halo 2 you should then get the achievement:

  • THE TRUTH AND RECONCILIATION
  • THE SILENT CARTOGRAPHER