If not already installed, the client will prompt you to download the necessary language pack. :
: Go to Options > Sound Options > Subtitles and select "On". Then, check the language options within the sound menu to see if Arabic is available for text. Ubisoft Connect / Steam (PC) : Open your Game Library and select Assassin's Creed Unity . Choose Properties or Manage . assassin 39s creed unity arabic subtitles link