So this dungeon is ridiculous as MM hunter right? I don't know if it was the way the pug tank i was with was pulling, but Sidewinders constantly pulled other adds (neutral seaguls, other packs of mobs etc), could hardly use barrage the whole dungeon (even if facing a different direction).
Most groups won't kill add packs one by one and will most likely carve a path through the middle of them all (which is what happened to me, so i couldn't run on the other side of the adds and face the other way).
Was it this bad/annoying for anyone else?