Use WinRAR or 7-Zip to extract the downloaded pack. You should see folders named english and potentially sound_english .
If your version of the game supports multiple languages, this is the safest and easiest way. your Steam Library. call of duty black ops 2 russian to english language pack
Without this pack, you might be able to stumble through the multiplayer menus, but the nuanced story of Black Ops 2 —which relies on player choice and moral ambiguity—is completely lost. Use WinRAR or 7-Zip to extract the downloaded pack