Battling server outages, we were able to gather for long enough to battle Mimiron for yet another attempt at Firefighter. We had been working on it for weeks now, and with 3 hours on Sunday of attempts, we gathered again and finally got him down. It took just a couple of minutes past one hour as my flask wore out during the last fight. So I now sit with just a couple of achievements left for the Iron-Bound Proto Drake. And our group is moving forward quite nicely and it's actually been great fun to work on these achievements and hard modes.
More screenshots here and here.