jep and people use it as a cheat when they have to clear the dungeon , they need to finish AK , register at DF , then leave when theyre not at the end untill they get into the dungeon when the boss is already defeated ,, tada !! quest finished.
I had a lot whm , tanks etc enter and leave again in minutes , it's getting annoying when people leave when u are halfway the dungeon.
I had 5 people joining and leaving within one run