I liked this slightly more than The Devil Colony: A Sigma Force Novel so I will check out the next one. 
 The revelations of the Sigma team and the Guild do not stop in this one. Not sure how much they will blow your mind but they are fairly interesting. 
 When the action gets too spread out and involves tons of people I lose interest. At a couple of enemy locations I wasn't sure what the protagonists were dealing with so I lost some of the connection to the action. The bad guy army's size was too ambiguous. 
 I liked the scenes with Cain, being inside his head. The neurotech robots were cool too but felt slightly underused and again I didn't know how many there really were. I think they could have really added some horror and tension to the story. There were two scenes of a device attacking a lab worker and those were pretty great. Those were Jurassic Park-like in style but they are not built upon too much. 
 The escapes in these stories are unrealistic but that's not why I read these.