Originally Posted by C-Box
The trophy is weird. I went through all modes/matches/everything with someone in multiple sessions this year. Neither of us got it. Then people were saying it had to be done in one session as did Fly The Co-op. I've got a few people on my friends list with AWP, and they did it in multiple sessions. Also, I unlocked Fly The Co-op in multiple sessions while everyone is saying it had to be done in one go. So, i'm not really sure whats going on with the trophy. But if it doesn't work this time, unless I can find someone who's up for doing it all in one go, I'm going to have to forget the GTAIV platinum.
I am the exact same. It says that I have done every single mode. Pretty much all of them are twice as well yet no trophy for me either, It is so annoying!!!!