I don't mind them the things that really bother me are the people who stage achievements like bringing a party of friends into a game and having the suckers stand still so they can get the five headshots in one life achievement or whatever.
Of the top of my head I almost have all the Special Infected achievements for L4D2 which I like because I tend not to get multiplayer centric achievements.
Of the top of my head I almost have all the Special Infected achievements for L4D2 which I like because I tend not to get multiplayer centric achievements.