I was in multiplayer, joined a public PUG. We were in Fereldan Castle and when we got to the fifth level, to fight the dragon, one of the two players I joined with was able to get on top of the towers, the ones where the dragon hangs out in between bouts on the killing ground floor. He was able to move between the two towers instantly and attacked the dragon from up there. Question, I presume this was a hack, as I haven't found a way to get up there, but I am not the most creative gamer.
It was played on nightmare level. I had to dodge and weave like mad just to keep from being instakilled by almost anything that touched me. Not a problem for the two other guys, but since I have no clue how many promotions they have done, it would seem possible that a sufficient number of promotions would make your character strong enough to manage that level. I really should not have been there, but asked for a "random" game level. Didn't hold em back though, they really didn't need me.
Opinions, was this a hack.