My Xbox popped

That sounds like something over heated then failed, I would contact Microsoft via phone to see if they can service your console https://support.xbox.com/contact-us

Nope, I did not use anything other than my brain and my xbox. It also was not a glitch. Some did pop really late and some popped way too early.

Hey WraithTDK! A good first step to try would be to clear your console cache and then

re-download your profile. Will you give this a shot and let us know the results. Also can you tell us if you've just noticed this one achievement populating or have you seen this happen with multiple games?

They should be tracking, and eventually they should pop for you (along with their original timestamps from when you fulfilled the requirements.) The problem is that Xbox One uses online verification to push your "100% completed" achievements to actual "popped"
status on their servers. It's a measure that 360 and other legacy platforms do not require; it relates to the more sophisticated system they now utilize (which also in part is supposed to prevent hacking. Though sadly it doesn't completely.)

There have been loads of issues with the network, lately, so these late unlock issues have become more common. You could see these pop in the next day or two, it could take weeks or even months. It might require a forced system-wide sweep by Microsoft (like
they did last week, and I pray they start doing more often.)

I'll hope, for all of our sakes, that the wait is not a long one. And even moreso, I hope that they get these issued sorted out. Having to constantly worry about whether I can safely play games on XB1, and check the XBL status page before a session, is not
fun. I'm glad they at least managed to get the timestamps to adhere to their original dates, but I prefer my gaming history to be accurate as to the moment (and not having random bits missing.)

Your achievements should all pop once the system is working properly again.

I got 3 Spiderman 2 achievements pop when I was playing Titanfall 3 days after last playing Spiderman. So don't despair, your achievements will get added in due time.