Cathedral of Pain crushed

Step 1. 3 teams form, ideally outside a SG portal. Each of the 3 leaders must be in the same SG.
Step 2. Enter portal, make way to raid TP. At this point I'm not sure, I guess one of the leaders begins the trial through the Mission Computer or whatever the Mystic version is.
Step 3. Teams enter the portal and split up to take down 3 obelisks. Before the obelisk can be attacked, the Rularuu spawning from a nearby factory cube must be defeated; this will lower the obelisk's shields. The obelisks must be taken down within 5-10 seconds of one another. If the obelisk is not taken down quickly enough, the shields go back up and more Rularuu spawn. If the obelisk is taken down but the others aren't, it will reform whole and its shields will go back up.
Step 4. After all 3 obelisks are down, the 3 teams enter the portal that opens at the center of the map.
Step 5. Entering the chamber of an Aspect of Rularuu. This contains 3 factory cubes which spawn Rularuu, and all Rularuu spawned from these cubes must be defeated before the Aspect's shields go down.
Step 6. Debuff the ever living f out of Rularuu's regen and take him down as quickly as possible so his shields don't go up and force you to redo step 5 again and again and again and again and again and

Steps 3 and 6 are the hardest. The trial can fail at step 3 quite easily if the teams aren't coordinated or if one team isn't doing enough damage to their obelisk. 6 will also screw you over if you don't have enough -Regen and/or damage.