Well what I was doing was i was in the Main menu, and my friend invited me to a player match, while this was happen you get that black screen when going into multiplayer, then i told my friend to close party or even switch it to combat training something like that. While he did that I went into system link and went to create a class, my screen started giving me loading screens. and it gave me my real classes while sitting there and soon as I hit primary weapon it said lobby closed. So Idk if it unlocks everything, but something to try if you guys want. Leave feedback if u get anything.