Can someone help me with Assassin’s Creed Brotherhood Ezio collection on the Xbox one s?

@reliant flame.....this is the last title that Ezio will star in because Assassins Creed was all about Altair and Assassins Creed 2 is Ezios storyline and Brotherhood and Revelations are chapters in Assassins Creed 2.....The next game after this is going
to be Assassins creed 3

While I was waiting for your reply, I actually looked into that website and the achievement progress bar was shown 1/3 ways complete, which doesn’t make sense because the achievement means complete the entire mission. Is there a reason why?

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this Matt

When did you "unlocked" the achievement, today?

In the meantime, may I know if you tried everything from this thread?
https://answers.microsoft.com/en-us/xbox/forum/...

May I know if you tried to double check this via true achievements webpage?
That's the best way to know if you're doing something wrong or not:

https://www.trueachievements.com/

** This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Progress bar not is always 100% accurate
If you "unlocked" the achievement today. Try waiting 72 hours to see if it finally appears.

If not, the next step is report this problem to the Xbox team
https://support.xbox.com/help/account-profile/m...

Because no one here can put the achievement in your account