What I Liked
That scene. If you've read the book, you know what scene I'm talking about. That was one of the most disturbing, horrifying things I have read since Misery by Stephen King. In a way, I was glad (and horrified) that I was given a glimpse into harvest camp to see the reality behind what "unwinding" meant.

Spoiler

And the moment Connor saw the familiar tattoo on his new arm was terrifying.

I enjoyed some of the Christian undertones within the story. Connor seemed to be a metaphor of Christ.

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By the end of the book, Lev was able to believe in a God and a faith and a Bible that were not shredded apart by politics and justifications.

While Unwind explored some of the dark aspects of a Christian sect that believed in "tithing" a child, or giving him up to be unwound as a gift to God and humanity, the book constantly encouraged the characters to keep faith in God.

What I Didn't Like
There were so many things that bothered me about this book that I can't come close to listing them all, but I'll name what bothered me most.

I appreciate 3rd person POV, but I just couldn't get into this one. The narrative was fast-paced, but it was choppy and undescriptive. The characters came across as two-dimensional; I never bonded with any of them. The setting was extraordinarily unbelievable.

The description of the actual harvest/"unwinding", while completely disturbing, became so unrealistic about halfway through the procedure that I became annoyed and almost put the book down.

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Keeping Roland conscious as he was dismantled piece-by-piece was horrifying. But then he looks down and there's only his torso. And then only his neck. And then all that's left is his brain and he's conscious until the brain is completely divided. That isn't how the human body works, not even remotely. How was he conscious for more than half an hour after his heart was removed from his body? How was he conscious when all that was left of him was his head?

At times I felt like Shusterman was downplaying the actual dark significance of what it meant to be unwound.

Spoiler

Unwinding should be killing; it is killing, but a consciousness of the donor in its new body only proves the doctors right. After being unwound, you are still alive, only in a different way than you were before. A disturbing way, yes, but it is still a "divided state" of life, as they call it. Unwound Tyler communicated from CyFi's body. The happy reunion between the Admiral and all of the carriers of his son's body parts (who happened to all hold Harlan's memories and thoughts) greatly lessened the significance of the boy's murder.

By allowing the unwound to communicate in any conscious way from their new bodies, Neal Shusterman makes unwinding no longer seem like murder. This probably bothered me more than anything else in the book.