I've been a fan of the Berserker series for many years, but I didn't enjoy this one much. The pace is very slow, and involves a lot of zooming back and forth across the galaxy looking for this one amazingly extra bad Berserker, but always managing to arrive just after the fight is over. Our heros (and us the readers) don't even lay eyes on the enemy until about 80% through the book, and then, it is an anticlimax as the buildup to such a badass machine delivers an incompetent fighter. For example in the heat of battle the good guys hide behind a rock for a half hour to develop some side plot and the Berserker never can figure out where they went.
All in all it feels like it should have been one of his short stories but someone decided to stretch it to book length. It didn't work, for me. Plus there are hints along the way that the enemy is developing some new weapon or technology but that story line is abandoned in the final pages with no conclusion. Setting up for a sequel? I sure hope not.
Oh yes and after proclaiming that we've scoured the galaxy and determined the only intelligent life is human, we discover a new lifeform: some vague kind of intelligent fog. The author promptly refers to this fog as another "human theme" so I guess by definition the only intelligent life is human because ALL intelligent life is "human". Ridiculous!