How to fix “ultimate estus” achievement not unlocking, dark souls 3?

Hi Damien!

Sorry to hear about what happened. I would suggest that you check the official thread about achievements unlocking issues from the link below to try the other troubleshooting steps. If none of them worked, you would need to file a bug directly to Team Xbox. All guides are on the thread.
https://answers.microsoft.com/en-us/xbox/forum/...

Best regards,

it gets fixed!!! now i can unlock achievements, but a lot of achievements of dark souls and overwatch never gets unlocked, for example reach level 10 in overwatch, and im 24, but doesnt matter, thanks for the help!!!

Did your achievement ever unlock or find any other solutions? I have the same problem stuck at 97% on Dark Souls 3 with the similar type of achievement...

I'm experiencing the same issue. I have 'The Dark Soul' achievement for getting all of the achievements in the game, yet I'm sat on 950G and 42 out of 43 achievements unlocked. I have 1000G/Platinum on all of the Souls games, so it would be a shame if this
issue was never resolved. Please fix this!

I have 4 achievements currently in a "Done...Unlocking state" specifically for Dark Souls 3, having done twice and triple the requirements needed to achieve the unlocks. It's beyond frustrating now and serves as a nuclear bomb for my OCD. I'd really really
like this to be fixed...I've already tried all the basic "tricks" to force the achievements to unlock. Nothing is working...FYI these achievements have been in this current state since before official release date of DS3 in the United States.