Go to the SoundData\PC folder and delete all non-English language packs (e.g., Russian) while keeping English and SFX files.
Assassin's Creed Syndicate : How to Fix English Localization and the localization.lang File assassin 39-s creed syndicate localization.lang english
: Select the game, go to Properties , and choose your preferred language from the dropdown menu. You may be prompted to download a language pack. Go to the SoundData\PC folder and delete all
Community members on Steam Guides have created automated patches. go to Properties