Halo 5 lone wolf achievement broken

Games Halo 5: Guardians
1

So I finished the campaign on legendary and the achievement won’t unlock. My service record even says they’re completed. — any ideas?

2

You finished on Legendary, but not Solo. That’s what the achievement is for.

Edit: My bad I was mistaken. You did finish it solo. I would try just reboot the Xbox and hopefully it will pop up.

3

Already tried that. Didn’t work

4

Did you skip any cut scenes? Sometimes that will cause a level not to register as complete.