I hate the God awful challenges for iron banner. Kill 2 enemies in a row when it's 4v4 in a huge ass map? Good luck with that, wait for all the stars to align only to be teamshot to death. Kill an enemy while they are using their supers? You got 4 chances per game, if you are lucky, you won't get a voidwalker with a split second super. Good luck trying not to die to the enemy's super as well!