Inspiration: This is like the final act of a sixth Indiana Jones film, all ready to go. Eat your heart out, Spielberg. One inspirational nitpick: shouldn't the questions and answers in area 8 be reversed, Jeopardy!-style? (Not actually a nitpick--but it might be funny.)
Usability: Layout is great, I think this would be very easy to use at the table. I'm envious of your ability to fit so much material into a relatively concise word count.
Vibes: Really great puzzles and creative monsters. The map is a beaut.