I've tried it twice now with 2 different groups, the entire dungeon is around the same difficulty as Caudecus's Manor except for the final fight.
With both groups we were barely able to drop a single one of the bosses, and couldn't do nearly enough damage to prevent the res. If we managed to stay alive long enough for that, we would die shortly after. Most fights we weren't able to down a single one before wiping.
The first few attempts we tried killing Zojja first, Mr. Sparkles dies fairly easily to AoEs, and Zojja isn't too hard either. But then trying to kill Faolain we end up wiping due to Rytlock one shotting everyone.
After we did that a couple times we read you should kill Eir first instead. So mostly the same thing, Eir finally dies, target Faolain, either we don't do enough DPS fast enough and Faolain resses Eir, or Rytlock starts bouncing around killing everyone.
The most frustrating part is getting 1-shotted by Rytlock. From personal experience, Eir will snare me, and then suddenly Rytlock will come flying across the room and I'll be dead. No wind-up animation that you can dodge, just boom, dead. The guides we saw say to get a thief or something to kite Rytlock during the entire fight, but that never worked. Rytlock would always switch targets and start killing people off, or Eir would snare the thief multiple times and Rytlock would catch her.
It's really frustrating that this fight is so difficult in story mode. I understand explorable mode being difficult, and requiring above average coordination and communication, but it seems like this dungeon can't be completed with a PUG, you have to have people on voice comms to get all the timing and organization down.
So, has anyone finished this dungeon? Were you in a PUG or was it with your guild with voice com? If so, what order did you kill the bosses in? I really want to finish this dungeon, but after spending hours in it I have nothing to show but a really big repair bill.