If the Language tab in Steam properties fails, you can force the language using Steam launch options. This method overrides the default settings.
Steam may download a small update with the new language files. Restart the game once the download finishes. Method 2: GOG Galaxy Shank 2 Change Language
Choose your desired language from the dropdown menu. Steam may then download a small localization update. Method 3: Registry Editor (Advanced) If the Language tab in Steam properties fails,