okay, further update.

Did the exact requirements for falling out and no achievement in game or on xbox (i launched a nuke on an independent nation that destroyed my ally’s capital.) 

also now landstaker shows as no longer unlocked. What the hell??

I can confirm that the Wonder-Full Achievement is now obtainable on the Gamepass version.

Thank you devs.

Now please fix the other 4 too…

I can now also confirm that MVP and One Man Army unlock ingame and not in xbox.

Also, reloading your game after achieving them causes them to no longer be unlocked (same as with landstalker) 

Another patch dropped yesterday. No fixed for these issues were mentioned in the patch notes. A quick game didn't reveal and unmentioned changes to these issues.