Imperial Sanctum - Masters - in NM and HM with H/HHaving recently been taking characters through Factions, I have been forced to do the
Imperial Sanctum mission a few times recently. Not enjoying the premise of having to pay a runner, and with the difficulty in getting enough guildies together for this mission, I decided to try to take on Shiro with H/H and still try to get the masters reward.
THE PARTY:

The party consisted of my elementalist, Master of Whispers
, Livia , General Morgahn , Zho , Daeman , Lukas and Devona .
Tactics: It really could not be simpler. Forget about healing and go all out offense to kill Shiro as fast as possible.
THE SKILLS:
Copy/Paste Skill Codes:
Jonny Firestorm
OghjowMs4QXMIDADEDNNjVkVylA
Master of Whispers
OAVDMJlHPvh6QewCsHwgnhqK
Livia
OAVCIKxzbQFqBaDygLQVVAA
General Morgahn
OQWjEslqpOFZbwWbCI+HxCAAAA
NM RESULTS 1:58:
HM RESULTS 1:24:
NOTES:
Clearly the strategy listed on Wiki is not entirely accurate, specifically the comment that "A paragon with Wild Throw is not a viable substitute, as it takes too long to recharge." I encountered no severe issues running with only a paragon to end stances. It also was not necessary to "disable all energy-using skills of the hero and trigger wild blow manually." With this team configuration I was able to simply let the heros do their thing without controlling them. I also ignored the suggestion to bring along one monk (in addition to Mhenlo) as there was no need to bring one.
As for the celestial skills, the ele skill was certainly helpful (which I added to my skill bar in place of my rez). I would suggest waiting until Shiro hits the bottom of the stairs before using it, but otherwise it really was not too bad. In HM, I actually stood too close to Shiro and got killed, but got rezed very quickly and immediately got the use of my celestial skill a second time, which made things go a bit faster. Otherwise, it really was a proverbial walk in the park.
I hope that this helps others who need to conquer this mission! :D