Um, D*MN (complimentary) There's some deep stuff in here about the nature of sin and one's duty to their fellows that I really dig, and the consequences of ignoring them.
Love the art. Structurally I've always been a fan of using the page size however you want, and the landscape pages make great use of their space for the map, tables, etc.
I think what struck me most, though, is ho well fleshed out the Plains are while being limited in their scope as stages of a journey. It would have been easy to have each area be a one-note expression of its goal, and this doesn't feel one-note at all to me.