So I completed the campaign and went through and unlocked all the skulls along with the bonus objectives for each Campaign mission. When I go to select missions and turn on skulls every skull is unlocked and there however the achievement doesn’t show up that I unlock all the skulls or bonus objectives. How do I fix this?! I am an achievement hunter!! Please help.
Is the achievements Stuck at 100%? or done. Unlocking?
If so go to the achievement page on the Xbox website while signed in, that should fix it.