Really amazing! I've been playing solo for a bit and I like it a lot so far. A really wonderful beastiary. Beautiful art with lots of details for a huge amount of creatures. I love how different they are than standard beasts too and the sort of 'rumor' feature when PCs encounter them so they have a hint of what this creature is (which they've either probably never heard of before or only know radically different versions) but there's still a lot of mystery about them.
The fact that the book walks you through live generation of the area sets it up perfect for solo and zero/low prep sessions. After I a get a smoother grip on it all I'm going to test it out on a group. I have pretty high expectations!
The factions are also very rich though I haven't quite figured out how it all works together and haven't included them in my game yet. I think it will really enrich the game though.
I'm gushing a bit now but this book has really got me excited. Thanks for all the work put into it!