Enter Ssrez'Ras: Chamber of Stasis at 711, 255, 693 on Sothshae in Vesspyr Isles.
NOTE: There is a 365% CC Debuff (Corruption) so you will need VERY good pre-ToV armor or at least the quested ToV armor/jewelry. Also, even the trash mobs have millions of HP's (at least on Beta on 11/03/13)
NOTE: Damage numbers listed below for the named mobs were obtained on Beta on 11/03/13 so may be subject to change!
NOTE: If you are on the quest Tears of Veeshan: The Core Problem, you can bypass killing the mobs to get to "a Nexus Heart shard" at -108, -19, 10 by falling into the red pool below the zone-in platform. Make sure you land in the red pool or you will take fall damage unless you have a slow fall.
Warning! Many of the mobs have a nasty knock-back so be sure to fight them with your back against a wall (if possible) if you don't want to be knocked to your death or, at least, an unpleasant detour. They are also big fans of Stoneskin.
Go left and proceed counter-clockwise, clearing trash along the way (beware of Snakes hiding behind Crates!)
Kill Nemesis Arcanox and Elementox:
Fight them at 59, 64, 20 and 54, 64, 28 with your back in the corner (to deal with knock-backs)
During the fight you will see the message "Nemesis Arcanox begins to create a black hole near you!" - move to the other location to get out of the black ring that forms around you. If you do not, you'll be blown into the air (similar to the Deviator Yothsra fight).
Occasionally, they will port you back to where they were standing initially - move back to your fighting locations
You will also lose target and sometimes be unable to change targets
If you fail to kill both of them, the encounter resets (even if you've killed one of them).
Continue on to the elevator platform at 39, 64, 60 and click on the pillar at 51, 64, 57 to go down
Second Floor: Whips and Chains...err...Anteroom of Preparation
Anteroom of Preparation
Watch out for Sneaky Snakes hiding behind pillars
Make your way to the floor below and kill the two groups of 6 ugly Nayads
Go through door to the southeast to the Gallery of Cleansing
Dispose of any chamber custodians roaming around - you don't want them playing with you while you are fighting Ziskaya
Turn on your singular focus -- the surrounding non-attackable nayads will become attackable but non-aggro during the fight and wander through the fight. If you stick to your single-target attacks, it becomes an easy kill
As you move around the room, one of the "Icons" will come alive and attack you
Kill The Guardian Icon
During the fight, you will see the message "Sentries rally to The Guardian Icon from above!" and two Chamber Sentries will join the fight
Stay on The Guardian Icon (unless you have very high DPS) because the Chamber Sentries will merge and become The Chamber Preserver, which heals The Guardian Icon - switch targets to The Chamber Preserver and burn him down
Rinse and reapeat
After killing The Guardian Icon, walk behind the pillar on which he was originally standing and you will see an elevator platform and a switch
Click the switch to go down to Vrezdask, the Final Resting
Approach Ziskaya (the Chamber Warden is kneeling behind her) and she will disappear and be replaced by a glowing gold ball
Click on the glowing gold ball to "Lay Offering" - I don't know if it was a percentage or a fixed amount of damage but when I "Sacraficed myself", I took 253K dmg and was down to about 50% health
Kill The Chamber Warden:
This fight was insane
There are four other Icons in the room behind energy barriers: Icon of Spirit, Pestilence, Force and Matter
Burn them down when their shield goes down
When The Chamber Warden comes into the cell with the Icon you are killing you will retarget The Chamber Warden and are not able to target the little guy
Run out of the cell (away from The Chamber Warden) and you can target the Icons again - burn all four of them down
The Chamber Warden will continue to heal himself as you fight
Every so often, you will see the message "The Chamber Warden is temporarily vulnerable to spells!" - Burn him!
NOTE: Run him into the beam of electricity in the middle of the room to make him vulnerable. DO NOT walk into the beam or you're the one vulnerable.
After he has been vulnerable for a bit, you will see the red text "The Warden's wrath has increased!" - Stop fighting him toe-to-toe and run around the room ahead of him using ranged attacks (by this time my merc was dead)
I kept repeating "Burn him while he's vulnerable, range/kite him when he's not" and was able to take him down...it wasn't pretty
Click on the pillar at 4, -224, -21 to exit zone
ADDENDUM: I discovered that if you don't hit the Chamber Warden at all while you burn down the four Icons, he will not damage you very much. Once they are dead, burn him down. If you are careful and do it this way, the fight isn't that hard.