If you are using a version that requires external files, you will typically need to download a pack containing english.pck or similar localization files.
If the menus are in English but voices are not, you may be missing the English_Audio.pck file.
The Sniper Ghost Warrior 2 English Language Pack is a vital download for players who have purchased a version of the game locked to a different language, such as Russian or Polish. While the gameplay is focused on precision shooting and stealth, understanding the mission briefings and tactical dialogue is essential for a complete experience. Why You Need the English Language Pack
Locate your game installation folder (usually under Program Files/Sniper Ghost Warrior 2/Game ). Back up your original language files.
Copy and paste the downloaded English files into the Localization or Languages folder.