Wow, this was a great play. I was totally sucked in after the first run. The atmosphere is immaculate; a great synergy of the subdued but trepidatious soundtrack, minimalist environmental art, and the gripping writing. Everything had an air of mystery that peeked my curiosity.
The gameplay loop took a second to wrap my head around, but I got better after each play and managed to get the 'even an expert mapper couldn't do better' line for each difficulty. The randomization of it makes it fresh each time.
When I found the first note in a treasure chest, I stared at the first note for a while and noticed that the characters were consistent to the english alphabet in the glyph. I started mapping them on paper, and after a couple more runs of this managed to spell out one of the phrases. I was curious if it was from somewhere and found out it was a passage from era appropriate poetry.
I think I've gotten 4 endings so far, and am curious if there is anything deeper here that I haven't seen.
Awesome entry!