Sometimes changing the text to English will leave the audio in the original language. Full conversion requires replacing the audio files in the Sounds or Speech folder as well.
HKEY_LOCAL_MACHINE\SOFTWARE\City Interactive\Terrorist Takedown 3
Below is the definitive, step-by-step guide to translating your game text, menus, and subtitles into English. Method 1: Modify the Game Configuration Files (.ini / .cfg)