If you’re playing the CODEX v1.5 repack, the base installer usually strips out non-English audio to save 20–30GB of download size. The language pack restores:

: If the game launches in Russian by default, you may need to edit the steam_emu.ini or equivalent configuration file in the game's bin/x64 folder and change the line Language=russian to Language=english (or your preferred language).

Ensure your base game installation is precisely on . Attempting to install a v1.5 language pack on version 1.06 or version 2.0 will result in complete silence during dialogues or fatal game crashes. Step 2: Extract and Move the Files