on PC, you can typically use the built-in Steam feature or a manual file replacement if you have a region-locked version (like the Russian or Polish editions). Method 1: Steam Properties (Official Way)
If you have English menus but the characters are silent, you are missing the localized_en_audio files. These are large files usually found in the main folder. Make sure your language pack includes these .iwd or .pak files. Game Crashes on Startup Call Of Duty Black Ops 2 Pc English Language Pack
Corrupt Files: Sometimes the original English files become corrupted during an update or installation. on PC, you can typically use the built-in
deposits, buried under the guise of "English Language Strings." The file, labeled English_Lang_Pack_v2.0.exe Make sure your language pack includes these
Before downloading external files, try the official method. Steam stores all available language data on its servers. Open your Steam Library. Right-click on Call of Duty: Black Ops 2. Select Properties. Navigate to the Language tab. Select English from the dropdown menu.