no problem at all man. i have never heard of anybody flat out not being able to unlock AWP. I have however...heard of people going through the list more than 5 times. The problem being that if its just one game that's not counting there's no way to know if it's registering correctly when you re-do. Meaning it could only be one track that you need but you could go through the list multiple times completing that one track and it's still not counting.
i know it's awful....but if you keep at it you will get your trophy. Recently the stats on the social club have been down...it's probably not a good idea to go for this until they are back up. my friend aroccqer did it all in one session during a time like this and still didn't get it.