This is a very bold novel, with a ton of ideas and an incredibly unique setting. I wish more current authors would take risks like this working out the mechanics of the biology and the society of such a place. The writing style takes a little getting used to. Plus, I had a problem with the characterization, though I can't put my finger on why.
The plotting and tone are much smoother and better handled this time. Tamas' sequence of retreat through enemy country is particularly well done. The negative part is in the characterization, or more accurately, the character interactions. Characters seem to butt heads merely for dramatic and plot purposes than for genuine reasons. Still, it was a fun and gripping read.