I was debating between 2 and 3 but I didn't want to be too cruel.

Zero Repeat Forever is a book about aliens invading Earth - the two protagonists are Eighth, one of the invaders who becomes a deserter, and Raven, one of the survivor humans.

And... I didn't enjoy it very much. I liked the set-up of the book, and I liked Raven's parts sometimes -but I couldn't emotionally relate to Eighth, his parts were often difficult to understand, and I'm still not sure how the Nahx society works at all.

Also, I'm not sure if this counts as a spoiler, but the book ends on a cliffhanger, which... okay, I get that it's the first in a series, but I still like when each book is a complete story on its own, you know?

Here, I felt like I finally got through an almost 500-page book that was much longer than it needed to be, and it wasn't even the complete story.

tldr; The book had some interesting ideas, but overall I couldn't relate to one of the protagonists, and I felt like the book was much longer than necessary.

I do like the title and its significance, though. That's a nice one.