[Dustin]

Obviously a megadungeon requires different Completion terms. Perhaps 1xp for every 10 encounters (where an encounter can be a fight, a negotiation/roleplaying opportunity, trap, or obstacle/puzzle), with an additional 1xp for finding a new safe area where the party can rest.

xp for treasure is tricky, needs a sliding scale, I think. Perhaps you can set an increasing threshold based on the Speed/Range table, so starting at (say) $100 per character, once the party amasses that much loot ($500 for a party of 5), everyone gets 1xp. Next threshold is $150, so the party of 5 needs $750 in additional loot to get the next xp. Priceless items (artifacts, Mona Lisa, etc) can just be 1xp by themselves.