I just completed this challenge a few days ago, but unfortunately I've never been able to just accept a freedom victory and call it a game. I've brought Elpuri's head to Attnam prolly a dozen times and dropped it, returning to the dungeon for greater glory and invariably losing everything. This time I even got 55 Int and a full valpurium/GEF set and even killed Sherry, only to stupidly die to a kamikaze dwarf because I left my wands out of my box (while invisible no less.) I've still never won 0.50
I did learn a little about the gods though. After getting armor from Atavus, I successfully went evil enough to get Neerc Seulb by eating several human corpses, going on to become good again with mass lantern sacrifices to Legifer