Overall X-risks is a pretty good expansion to the Eclipse Phase universe, with lots of details on major threats, minor threats and monsters for your games. Unfortunately Posthuman Studios managed to miss producing any threats for (and from) one of the major political factions. Since this is the faction your players are most likely to be spending time around, this is a pretty major oversight.
After reading the full book, I knocked another star off. We needed a monster manual, but these range from a few interesting ones to many downright awful ones. Not the good kind of 'makes me uncomfortable' awful, but B-horror movie awful. More senseless zombie-making xenofauna than you can shake a stick at, and some exsurgent and TITAN monstrosities that are more puzzling than terrifying.
[2 of 5 Stars!]