Palace of the Dead...
I go in as a Ninja. Paladin and Summoner die at floor 43, one member having lost connection on floor 42. I'm the only one left alive in a three-person group, no PD, but plenty of healing capabilities to help me solo enemies 1 on 1, sometimes 2 on 1. I fight hard, all the way until I finally reach the Cairn of Return. Took me maybe 10 minutes, or so. Just as I reach the CoR, a vote abandon pops up. Just as I click no, someone finally joins, and the run goes bye-bye.
Wow.