You have Subscribed!
Find the line: seta locale "russian" (or "polish" , "german" )
Stick to the manual method above using only .ipak and .sabs files. Legitimate language files are never executable. call of duty advanced warfare english language file link
Rename your existing language folder. For example, change zone\russian to zone\russian.BACKUP . Do not delete it. If something goes wrong, you can revert. Find the line: seta locale "russian" (or "polish"
The easiest way to obtain the English files is through the official client. Open your . call of duty advanced warfare english language file link