Plutonium

I have tried to find an English language pack/file or something similar but doesn't seem to be any available.

When i bought BO2 back in 2012 i got it through some alternative keyshop with what im guessing was a polish language locked client, i did however back in the days have the ability to change to english i just don't remember how i did that. So now the game launches in polish, So wanted to see if anyone here has any knowledge on how to change the language. Steam properties - general does not work.