So if Lullaby actually worked it would be doable? Too bad its been broken
for 8+ months.

Kit
A whole lot of greenies will go agro on you. The king room solo isn't an
option since Borxx (named evil eye) is level 32, few HP but he hits for 70s.
The knight room is possible if most of them don't agro based on level. With
the exception of Borxx nothing in there should present a problem solo but
it's getting swarmed that's a problem. I do recall my ranger (on corpse
recovery run) was able to get just outside the king room at 29th level and
not agro those goblins outside. The Elites and king would have gone agro for
sure though.

Scott/Reedwind
16th level Bard
Bertoxx