Caul Flagging

Since the update, the dungeons now holds higher level creatures (such as Drudge Bloodletters, Virindi Consuls and Assailers).
Singularity Bore flags you to be able to use the portal to Singularity Caul. Flagging consists of killing The Guardian of the Singularity. There are 4 possible routes to different Guardians.
The number of chain casting enemies can become overwhelming if you are not near maxxed magic defense. One way to accomplish this quest easily if your buffed magic defense is already around 250 to use a magic defense rare boosting magic defense to approximately 500. Almost no spells will get through a magic defense of 500 which makes killing the Guardian a matter of finishing before the 15 minutes on the rare are up.

Walk Through

You need to obtain the kill on the Guardian of the Singularity to be flagged for Caul. There are 4 Guardians available in the dungeon.
From drop, go S and jump down a pit (two traps, a mana blight and a lightning bolt one)
After the jump, go either W or E, next either N or S. At the end, each room will hold a Guardian.
The shortest run is to go W, next S. Enemies in the Southwest route consist of Drudge Bloodletters, Ascendant Drudges, and various high level virindi.
Kill the Guardian of the Singularity, and loot the Quintessence Sickle from his corpse.
Once the guardian is dead you are flagged after you get the message about only opening the path to your doom.

Recall -

Note Everyone must be flagged for Singularity Caul (see below) to complete this quest.
Someone in your group must have Lockpick.

Go to the Singularity Bore at 64.1S 63.8W, in the center of the Obsidian Plains.
- Tip: Use the Dangerous Portal Device at your mansion for a quick ride to the center of the Obsidian Plains.
From the drop, head South and jump down into the pit.
Take the West ramp up and then go left. From here, its linear until you reach a large room at the end with a Guardian of the Singularity (2 of them).
You must get the kill on the Guardian of the Singularity in order to be flagged to access the Singularity Caul.
Portal recall to the Singularity Bore and run North to the Singularity Caul portal.

Note: Someone in your group should have Lockpick to complete this quest.

From the Caul Drop, head to the Caul Asylum at 94.8S 91.0W.
From the drop, Lockpick the door to the North and run through the linear dungeon (always going down) until you get to a large room behind a locked gate.
Unlock the gate to the large room, and head to the South exit. Unlock it and head down the ramp.
From the split, take the West hallway until you get to a room with The Gatekeeper. Kill him and loot an Asylum Chest Key (one per group needed).
Backtrack to the split. One person (with lockpick) should now head back through the large room, and up the first ramp. Take all lefts until you reach a room with a locked door and a Asylum Chest inside. Use the Asylum Chest Key on the Asylum Chest and loot the Asylum Key, then rejoin the group.
The group should now take the east hallway to a large room with a locked door. Use the Asylum Key on the locked door and enter the portal to the Caul Athenaeum.

From the drop, take the Northeast ramp up. Take the first ramp up on your left, and continue until you reach a 3-way split.
You must now access the portal to the Caul Sanitorium, which is located behind a locked gate in the first hallway after taking a right at the 3-way split.
- Long Way: You must find The Sage, who always spawns in the southeast corner room on this level. He drops an Athenaeum Key, which is used to unlock the gate to the Caul Sanitorium portal.
- Short Way: You can use the PKLite exploit to bypass the locked gate.
Once the gate is open, jump accross the portal walkway and use the Caul Sanitorium portal.

Note: Only 1 portal in this dungeon is real, the rest bring you back to the Caul Sanitorium drop.

From the drop, run down the portal staircase, and jump across to the Southeast platform
- Tip: Its easiest to jump from the portal staircase to the Southwest platform, back to the center pillar, and then to the Southeast platform.
From here, take the ramps down, take your first right, and then the first cutback to your left.
Now hug the left wall, take the ramp up, and follow the long straight hallway until you dead-end into a split.
Take the hallway on the left (Southeast), and use this portal to enter Aerbax's Antechamber.

From the drop, you'll need to use a series of levers (see map) to open the South gate.
- Tip: You can use the PKLite exploit here to bypass the levers and save time.
Head down the ramp and take a right at the split. Follow the linear dungeon.
- Note: 2 doors along the way will require you to use a lever, which are behind locked doors just around the corner.
Once you open the last gate, jump down and take a right, where you'll find a group of Shadows. Kill them and then hit the lever on the South wall.
Enter the room to the North and kill the The Auditor. Loot the green Asylum Chest Key.
One person also needs to get the blue Key from the The Auditor to open the final door.
Once everyone has their Asylum Chest Key (Auditor), take the Northeast exit and work your way back to the portal drop. A lever on the way opens the North door.

From the drop zone, take the North ramp down, but be sure to jump over the base of the ramp (at the intersection) to avoid the dispell trap.
- Note: If you forgot to hit the lever on the way, you can also use the PKLite exploit to open the North door.
From the intersection, your first left, and then your first right will take you to the final room.
- Note: You must use a lever to open the locked gate here. The locked door to the Northeast provides access to the lever in the room to the Northwest, which subsequently opens the door to the North.
Use the Key (Auditor) (from the The Auditor) to open the final room, which contains a number of Sanatorium Chests.
Use your Asylum Chest Key on any of the Sanatorium Chests to obtain the Recall to the Singularity Caul.