I can see why other people would like this book, but it was not for me. The author put in everything he could think of to make the book fun and emotionally engaging, but you have to turn of your cerebrum. There's lots of absurd premises and contrived circumstances to make a cool battle scene. The main character is a Mary Sue. Yes, I struggle with suspension of disbelief to some extent, and this book pushed me too far. 
 Also, I happened to read this at the wrong time: the "BrainPal" computer implants would have been cooler if I hadn't just read an article about even better real-life technology in progress that makes BrainPals look lame.