I just started doing dungeons, solo at first just for the fun of it. But I am wondering, what determines the gear set you get in a dungeon. Is the totally random, or does it depend on the type or role of your character? I asked as I noticed that when I tried a dungeon with my nighblade medium armor user, I got items from the medium armour set, but when I tried the same dungeon with my tank, I only got items from the heavy armour set. So, I expect it depends on your characters but I am not sure. Maybe it was just a random fluke.