After another failed attempt at getting in to BWL (although we did get attuned so we don't have to do UBRS again), we hit up UK, TotC, and AN. We tried to do On the Rocks while we were in UK but it proved to be too difficult without anyone to heal when Mogrhys gets entombed. We are either going to wait until we have a fifth person or stack frost resist to resist the blocks.
Azjol-Nerub has some of the more difficult achievements. Since we had not yet done it on heroic, we decided not to try to do any of them, but we managed to get Hadronox Denied inadvertently. I think it was actually bugged, as there were no more adds spawning by the end.