Temps : 42sec
Time 37sec - 50 sec.
Time depends too much on passive and cooldowns, also stronger fodder will take longer.
At least 1 meditation set is recommend and about +60 rank ups.
149-155 is the sweet spot for speed .
Staff set to strength/celerity/strength.
Avatar level is 420 and osko wave 3.
I think f.succubus is more versatile and a better investment for faceless library and other dungeon although e.ninja is working well in my exclusive dungeon team.