Will I get banned for this: There were no reports of bans. This is not a change in the game code
Does this work with multiplayer achievements: Yes
What games does this work with: In theory, any one. But there is no way to test each one

WARNING: You can only get all achievements at once. You cannot select the achievements you want to get. For instructions on how to get specific achievement, see this guide:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3437792572

Download .spool file from for your game here[drive.google.com].

.Spool file table at the bottom of the guide

Open any folder and write %appdata% in address bar


The folder Roaming will open with address C:\Users\{User Name}\AppData\Roaming

Click to AppData at address bar to go back to folder AppData

1. Go to folder Local
   
2. Next go to folder Ubisoft Game Launcher
   
3. Then to Spool folder
   
4. And last go to folder with your Ubisoft ID, it look like c78d4f91-ecd7-44cs-71p9-1235a4dfg69l

There you will see many .spool files
Our final address is C:\Users\{User Name}\AppData\Local\Ubisoft Game Launcher\spool\{Ubisoft ID number}

Copy .spool file you downloaded in step 1 to the Ubisoft ID folder. If there is a file with the same name, replace it. Each game has a different .spool name.

Launch the game. Achievements in Uplay will be received at this moment. In Steam after synchronization. Usually instantly

WARNING: Achievements will be received with the date of the original player. Even if you bought the game later

Thank you for your rating!

I hope the guide helped you get 100% achievements. Happiness and good luck

If you have 100% in other Ubisoft games and are willing to share .spool files, please post links in the comments.