This book surprised me. I had been considering reading it for years, but hesitated because I usually don't care for first person fiction, and because I was concerned that it would be all fighting. Then one of my groups chose it as a group read so I decided to try it. I started with the audible version while on the treadmill and found that the first person aspect didn't bother me at all. Perhaps, having a mature baritone voice telling the story was the difference. Anyway, it worked for me.
Then I finished another book I'd been reading and picked this up on the kindle to continue where I'd left off on the audible edition. And found I couldn't put it down. Finished it in one sitting.
My biggest problem with the book was the treatment of all alien species as "anti-human". And the one person in the story who wanted to try diplomacy was painted as pretty stupid.
However, it was a gripping story that totally held my interest and made me curious to read more of Scalzi.