Ah, A/e farming help

So, i was looking up that farming build the "shadow farmer". Guess it goes either way(A/E,E/A). Got the build, read where to farm
First spot i farm is right out of "Maatu Keep". The Assassin boss with Assassins Promise. The guide suggest i let the brotherhood attack the Am Fah first then move in. But i dont think this is possible with the healers left? or not enough people attacking you for the sliver armor? I dont know how many hours i've spent tweaking the build to try and farm him....Can anyone help out with this problem? or Assassin farming in general?

No one knows? ahhhh lol. Well if i evvvvvvverr figure it out i will enlighten you all.

Im not sure what your problem is. the build is simple and easy, Ive never had a problem. do you have the right equipment/skills/attributes?

If you are having trouble with the buildss, start on an easier targest(Scar Eater, or Sessk, WoeSpreader). Maybe after killing them a few times you'll start gettin the gist of the build.

The build i use : Shadow Form, Sliver armor, Glyph ele pwr, gale--obsidean flame, Deaths charge, dash, dark escape. The boss's name is Xuekao. Seems impossible using the A/E build while his healers are there. My attributes are 15 Shadow , 12 earth . 49 energy...enchant mod on staff. I've killed this boss using 3 builds, but the success seems random based on if the healers die or not during the Jade Brotherhood rade. Question: has anyone taken him out while the healers are there using the A/E build? PS , i'm having better luck with the Mobieus build pulling him and 2 other henchmen out(a healer and a necro). K thanks