I'm assuming you guys killed all possible enemies and did an early drive towards the treasure finder medal as well.
Hmmm... this does not bode well for my run. With level 3 Learning and two weak +XP items, I'm only up to +30%XP.
Ran the very useful KBScanner on my save game and saw two Hand of Necropolis items... both at Nameless.

Not looking good at all... even for a target level of 58, which seems to be the max possible level on impossible at the moment.