Having experienced your work before I might remark that it goes without saying the art and presentation is top notch. There's really no arguing that this isn't pretty to look at, harmonious in the layout, and also has that intrigue factor on seeing the NPC portraits, among other cover elements.
The hook is super evocative and reminded me of an HBO intro or "last time, on" section of a show.
The story itself is quite dense and as a Guide I'd expect to prepare this pamphlet well ahead of time and be sure I understood all the moving parts. There's a lot of meat on the bone especially for big roleplayers. I could easily see this fueling a session per act at least.
The only thing I feel is worthy of mention for critique here is that the interior page, the amount of text, and the (mostly) monochrome presentation is a little fatiguing to read. Your red spot color might be nice for some of your bolds, maybe a drop shadow on text or something to pull the body away from the background. It's a minor issue if anything.
I believe I see some basic spelling errors to clean up for a full release but that would be to nitpick.