Wow, sounds like the Halo lore took a pretty awesome turn with the new books. I need to get off my ass and read those things. Sounds like the new trilogy has some amazing stuff to work with.
It's lukewarm to me. Glasslands is a mediocre book in my opinion, though kind of essential to the Halo plot going forward.
In order of importance to the events of Halo 4, I gotta think the Greg Bear trilogy is tops, followed by Traviss'. Cryptum >>> Glasslands, by a country mile.
So, Cryptum is essentially a must read. Glasslands is recommended seeing as it is the most "up to date book". The meat of the actual Halo lore is in Ghost of Onyx, Fall of Reach, and Contact Harvest. You can skip Evolutions, the Flood, First Strike, and Cole Protocol if all you care about is lore leading up to Halo 4.
