Ulduar: Halls of Stone

One of the more hectic instances - some of the trash is likely to be a challenge on heroic, especially those lightning mobs and the event with AE damage. As can be seen on the video, I tried to outrange the AE by fighting outside the room, but it didn't work. The damage was nasty enough on normal, since I would often not see it until my slaves hp bars started dropping. The colossus boss has a nasty pushback also, which requires some positioning, but other than that nothing of note.

Edit: http://www.wegame.com/watch/Ulduar_Halls_of_Stone/