An update to the post I made regarding achievements not unlocking. I spoke to an Xbox...

I just bought Spectra on Xbox one, No achievements are unlocking or % are updating,

I just unlocked an achievement on the TrueAchievements app but achievements don't seem to be updating on Spectra.

I try to unlock achievements but the main rule... If unlock the achievement it's not fun, don't unlocked.

Regards?

Yes. I've unlocked those achievements when this site wasn't updated. I've downloaded the DLC on July the 3rd and the site has been updated yesterday. I made the missions again but the achievements doesn't unlock anymore.

So, i can't see the achievements on the site but they are unlocked on the console (ONLY in game specific achements list, not in the "game list"). Hope to have explained properly.

What can i do?

It's been going on for over one month now. Half of the posts for about the first ten pages here are about the same thing: achievements not unlocking. For a bit of personal amusement I spoke with MS support the other day and the guy I spoke with thinks that
achievements and their progress are stored on the game developer's servers. Apparently MS are unable to fix this problem!? Well he is right in one sense: the technical team at MS cannot fix the problem, but that's for very different reasons.

Achievements unlocking in game is up to the developer specifically. There is nothing that xbox, xbox support, or this forums can do to correct the issue. I would continue to speak with Activision in regards to the achievement not unlocking.