i beat halo 4 solo i got the mark iv armor and legendary visor and my commendations say i beat all the levels on legendary but i have not unlocked the achievements. i did beat on level on a different xbox should i redo that level?
All levels need to be completed on the same save file, so if you took the save file with you on every other xbox is should have unlocked.
It happened to me aswell, just look at your commendations and you will see what missions you ‘‘haven’t’’ completed 