1. Press the Win + R keys and write regedit
2.Go through the tabs HKEY_CURRENT_USER, Software, Ubisoft, Assassin’s Creed Rogue
3. Right-click on an empty space and “create – string parameter” call it “Language” then double-click on it and write “Russian” Or if there is a line “Language” just change the value to “Russian”.
I hope I helped someone. Have a nice day everyone?!