Complete reach legendary stuck 8/9

All missions say solo legendary completed.

Each rally point also says legendary.

Every missions completion achievement is unlocked.

I’m probably going to have to okay the whole campaign to find the “missing one”

It was also done in one sitting

Did you want all introductions, cut scenes and end scenes? Sometimes skipping them causes it not to register as complete. Or sometimes it won’t register until you reload the game.

Checked on waypoint.

Its long night of pain in my…
I mean “solace”

Says legendary in game.

Says not completed at all here

You’re internet might’ve cut out mid game and then came back. If that happens, it won’t register on waypoint and won’t count iirc. Sadly you might have to replay the mission.