I really hate Ubisoft and this bugged game! I played (for the 1000th time) chapter one. No disconnection, no troubles... but still no trophy! Maybe something happened after the last movie when it loaded the game recap. So far just one coop trophy (thanks to Warmdrift) and I'm level 25... --- PSN ID: Dave_Cozmo XBL GT: Dave Cozmo
Well you can try and join lobbies and leave them until you become the host. I did that and I hosted maps 1-8 in one go and got them all done. It might take a few tries to become host though but at least you can choose the map and know for sure that you were there the whole time.
Lastly, if you get a bugged out opening cutscene the trophy won't pop up. I had to redo one of them because the opening crashed, said we were all dead and then respawned us. --- PSN: Soggy-Snake-