Finished it at 902 item level with Prydaz, Belt, Gronntooth and Might of Krosus after maybe 20 tries (+ watching a lot of videos, reading tips).
It was very clean kill - triggered no fuming for the whole fight and killed all imps till the very end.
I really enjoyed doing it - it felt like real progression, which is remarkable for a single person encounter.
At first tries went horrible, after some time I learned to prioritize the imps (as well as their spawning patterns and the importance of a well placed BC+OF to get rid of big waves), and then it just became a challenge of perfect execution.
Kiting fumings, dodging rocks while still correctly prioritizing what to do is a real multitasking challenge
.
Major points:
* AE needed (Najentus Belt helped me a lot)
* Selfheal needed (Prydaz/Bracers)
Even though I think the selfheal part currently is a bit overrated - substantial damage only seems to happen when something goes wrong (fume explosion, not interrupting her channel for to long, letting her get shielded by umbrals while channeling, caster imp living to long).
Sure it helps when something goes wrong, but considering a completely clean try Furious Charge should be enough.
AE on the other hand - at least with current gear levels (and a "kill everything" strat) Najentus + AE trinket felt nearly mandatory.