Piece of advice for new players, forevent quests don't send customers on them until after you have all the iems required because otherwise you will have people that you can't send on other quests for a while.
I was in one of the rooms for tunnel and I saw the phrase "Tunnel Snakes Rule" on the wall. There was a Medusa I believe in the room at the time and after I beat it the phrase vanished. Cool easter egg though. For people who don't know it is a reference to the Fallout games.
There is a small bug-like problem to the game, whenever you have the explorer sometimes the doors would have a requirement of 0 keys, but you still have to match up key tokens. I am thinking that you should maybe change it so that the doors open atomatically in those situations.
On the gun guide book if you keep hitting next you will reach an area similar to the "don't push the button game". If you keep hitting next after that you will eventually get five gold and then go back to the start of the book. You can do this as much as you want. Hit plus to let others see!
Okay i am mad. My game just glitched (I think). The enemy monster started with max "action points" and would automaticcaly go back to max after every attack. I couldn't even attack at all. It was bullcrap. Hit plus if this has happened to you.