I'm missing:
Show me What you Got
Zavala's Lieutenant
Ikora's Protege
I've completed the subclasses week one and call to arms every week on every character. Also, I'm NOT game sharing. Things I've tried to get them to register.
Clear cache, clear persistent storage, reset temporary mac address, sign out of Xbox Live, remove account from Xbox console, hard reset, waited waaaaay longer than 72 hours, remove console from wired internet use wireless, went back to wired and finally called XBOX LIVE SUPPORT!!
They ran me through several of the same steps as listed above and said they're getting many complaints from destiny gamers about this issue and it's likely a coding problem from the developer that's not processing completion. So please BUNGIE FIX THIS!
*EDIT*
After being booted multiple times today and getting many "contacting destiny 2 servers" I magically received my 3 missing achievements. It took 3 weeks, but they finally arrived...
Hello,
One thing that may work would be to Switch Profile while in-game.
Open inventory, tab over to settings, hover over Log Out, and select switch profile. Then select your profile.
If that doesn't work either, you'll just need to wait it out for a patch or until it finally unlocks.