Ok I’m raising this issue here in hopes that possibly there are a few others out here who are experiencing this issue also and happen to have found a way to fix it.
problem is when doing the campaign on legendary I don’t seem to be getting the achievements for finishing each individual level on the first run.
(Tempus Deleverit Omnes Vulnera / Time heals all wounds, Unless your hit by an incineration cannon)
From the known issues thread:
Completed Campaign but missing achievements
Upon completing Campaign, some players find they are missing certain achievements. If you pause, you must use the “Resume Campaign” button to resume. If you choose “Rally Point Bravo” or “Rally Point Charlie”, this issue arises. We are investigating but for now, replay the missions from beginning to end using only the “Save and Quit” and “Resume Campaign” options to unlock the relevant achievements.
Does it help?
Have you played any of the missions offline?
I have it now, I just relaid the level and got it on the third completion. Otherwise it just seemed as though it was pot luck wether i got it or not.