Posted on 24 November 21 at 15:31, Edited on 24 November 21 at 19:59 by Octicism
Hello,
I ran into this same issue. I don't know if we were having the exact same problem, as I see you managed to unlock two achievements, whereas I could not unlock any. Regardless, I have found a way to fix my issue, which may fix yours as well. I believe it involves manually forcing an update to the systems responsible for PC Xbox achievements.
Step 1: Close the game
Step 2: Completely shut down the Xbox app and make sure it isn't running in the background
Step 3: Search for the Run command or just push Windows Key + R
Step 4: Type "services.msc" and hit enter, a long list of local services will open in alphabetical order
Step 5: Scroll down to "Connected User Experiences and Telemetry"
Step 6: Right-click, open properties, on the first page beside "Startup type:" ensure "Automatic" is selected
Step 7: Under that, make sure the "Service status:" is selected to "Running" then click "OK" at the bottom
Step 8: Scroll to the end of the services list, select "Xbox Live Auth Manager" and repeat steps 6 and 7
Step 9: Finally, find "Xbox Live Networking Service" nearby on the list and repeat steps 6 and 7 once again
Step 10: Close the window and restart your PC
Once your computer restarts and the desktop finishes loading, you may actually see all your missing achievements pop up and unlock one by one. But if it is a lot of achievements, you may not see them unlock at all. Regardless, open your Xbox app, go to your profile and check to make sure the achievements unlocked. Now, in my case, this is not a permanent fix. Each time I want to unlock a group of achievements for this game, I have to go into the services list again. But you do not need to go into the properties of each of the 3 specified services after you changed them to "Automatic" and "Running" the first time. Instead, just right-click on each of the 3 services and select "Restart," then restart your PC.
So that is my experience and my fix. Hopefully it helps you and anyone else.