Thank you so much for these very kind words, Kumada! I am so very glad you enjoyed The Dark Below. This is a fantastic review!
Regarding dungeon generation - I do have notes on adding some advice and rules for generating dungeon-challenges that might get added to the core rules in a future release, though I have yet to decide how expansive I want them to be. The rules for the physical layout of the dungeon are kept light on purpose, to allow for adjustments on the fly, and to allow character-players to draw the map as they discover it - and to emphasise the strange, nightmarish quality of the environment. But I realise that there might need to be some more support for dungeon-creation from the GM's side.
And re: your minor issues
- thanks for picking up on that missed word! I'll fix that for the next revision
- In the first paragraph of Traversing the Dark, it is stated that you need a twelve-sided die to play the game! : "To play, you will need index cards or something like them for each Exile, a twelve-sided die to roll, and something on which to draw the map."
I'll have to consider re-phrasing some of the rules to repeat the fact that you're rolling a d12, just for the sake of clarity.