You're an idiot for complaining about having to play in a party in a social multiplayer game. Plain and simple. That said, my major complaint is that at no point in the advertising for this content did they directly connect the paid dungeon with the Gjallahorn. When I preordered, I preordered with the presumption that, as advertised, I would get the rocket launcher when I collected my preordered goods, and the dungeon would just be an additional fun thing to do. If I had been informed properly that I would have to clear the dungeon to get the headliner exotic, I would likely not have preordered the bundle, at least not for that exotic weapon. This is information that should have been in the advertisement for the preorder, and the fact that it isn't is problematic from a legal and ethical standpoint.