Just did a play-through, thanks for the fun! A couple of notes:
1. I just ended up keeping track of my loot on the scoresheet instead of the pile, made it easier. Because I wasn't able to put my -4 from the lever into my loot pile
2. The lever could feel a bit less random by playing "higher or lower" game. After putting down the first card, you have to guess "lower or higher" for the next of the 5 cards.
3. I ended my first round with 3 loot, feels like it'll be a lot of dungeons to get to lvl 2
Most fun parts were setting up the cards in a dungeon format, and grabbing potions. I had a few questions about the instructions that took me a bit of time to figure out (Thief: do I have an option to run away? Everyone has 3HP, even the monsters?), but another playtest or two should sort those out :D
Cheers!