This dungeon is located on the 2nd floor of the Dark Cathedral in Southern Val Aureum.
2:00 - 3:00 = Start with north room, dodge the traps on the ground, aoe the adds down and kill the big mob, click stone in center then proceed to the 1st east room.
3:00 - 8:00 = Have ranged destroy barrels, they do 50% damage to the mobs, tank and spank after the barrels are destroyed. The 1st set are easy enough, the 2nd set do an aoe dot/snare so they either need to be stunned or positioned individually, 3rd set is same as 1st set. When all the barrel mobs are dealt with, pull the remaining adds in the room 2 or 4 at a time. Note: Pulling caster add at the next door will pull the whole room with it, so you need to clear the room before proceeding.
8:00 - 10:30 = Avoid poking the 4 big adds in this room, round up the small adds and aoe them down. Chain the add next to the north door out of the way and proceed.
10:30 - 11:00 = We always just skip this room, I think the mobs there are just for quest.
11:00 - 15:00 = First Boss - Click stone to open the door, this boss is fairly easy but often times when grouping with koreans I some how manage to lose aggro ;-; It's just tank and spank, he'll run to mid to summon adds, just get them taunted and aoe down. He'll also do a big aoe hit, you can stun/interrupt/dodge, it's pretty much the same as the first boss in Sinestral Manor. Loot and proceed to the 1st west room.
15:00 - 20:00 = In entry level gear you should avoid pulling more than 2 mobs at a time in here, the koreans are impatient so pulled additional packs. ;-; The packs consist of 2x 2lancers (charge), 2x 2slayers (frontal aoe) and 2x 2sorcerers (when they hover and cast, move behind). We skip the adds on alter, again I think they're just quest mobs. There's another caster add at the door which I assume again pulls the whole room if you try to skip, when done move north!
20:00 - 22:00 = This room is fairly simple. When you pull a caster add, lots of scorpions spawn so be sure to taunt. Just aoe them down, the only annoyance of this room is the debuff they do.. it's a confusion thing which inverts your movement.. ;-;
22:00 - 24:20 = Kill the 2 lancer adds up the stairs. At this part, if you're on the story quest you can deal with the boss in the room north. The koreans assumed we had it, we assumed they had it.. awkward silence. Proceed to the room to the east if you don't have the item.
24:20 - 25:40 = This room again has quest mobs on the alter, but koreans skip ;-; so we just bring the little adds to the slayer adds up the stairs and kill them.
25:40 - 30:00 = Second Boss - Talking to the NPC in the middle of the room starts the encounter, this one is fairly annoying because she moves around a lot. She does a frontal cone aoe which does moderate damage so group needs to position behind her, she also does 2 types of large aoes. One is indicated by a red circle on the ground, the other is blue. The blue one does dmg followed by dot dmg for the duration you stand in it, the red one is just like the sorcerer spell. If she runs into her blue circles, simply have the tank chain her out of them. (I'm not sure if all the aoe dmg can be blocked, in entry level gear (lv27 legendary/lv33 rare) she can instantly kill tank if she chains the frontal aoe with red/blue aoe). Move to the last north room to face the 'last' boss.
30:00 - 35:00 = Third Boss - Reading the book spawns the boss. Main melee ability is just 1 hit, her red glow ability is 3 consecutive hits, she will also spin around hitting melee behind her. Her abilities consist of: A targetted red aoe on the ground, just move out of it.
When she rotates 180 degrees, she'll do a melee ranged aoe snare/dot. When her 2 lower snakes cross, she'll do a burst dmg melee aoe which applies a debuff that prevents you from using any abilities (deadly if whole group gets hit by it and she does the other aoe after). When she rotates 90 degrees, she'll fly in 1 direction hitting anything in front, if range manage to get aggro she'll jump towards that player (and if you get aggro back, she'll jump again.. very annoying lol). Loot and run back to the last west room we skipped for the actual last boss or 2nd boss with quest.
35:00 - 41:25 = Last Boss (Assuming you didn't have quest) - Have tank taunt and move to the windowed area (easier to tank here because you get pushed back a lot). He does a red targetted aoe on the ground which is easy to evade, he'll do a frontal aoe when he puts his right sword down and his wings hit the ground. When he steps back, he does a charge then 2 melee hits. Like the previous boss, he also does a spin attack which hits melee, then does another to hit tank again. Every now and then he'll walk to middle to start the clone phase, you can interruptthis phase by chaining him when he's walking to mid (like interrupting last boss in manor). During clone phase, don't panic, tank just block all dmg, everyone else just run around like headless chickens.