If the game is "stuck" in Russian and ignore Steam settings, you can manually change the language key in the Windows Registry.
Some versions of Just Cause 2 store the language in a hidden config file. Here’s how to fix it manually. just cause 2 change language russian to english
Click OK.
Change the value to English or the hex code dword:00000409 (English - United States). for the changes to take effect. 4. GOG Version: Language Setup Tool If the game is "stuck" in Russian and