Death's End is a fantastic follow-up to The Dark Forest. The pacing is excellent (improves with every book in the series), the scope of the ideas presented to the reader is staggering.

I will not reveal anything at all about the plot, because this series should be experienced by jumping into the books with a clear slate. In fact, I would recommend to the reader that you should not even read the blurb on any of the books.

My complaint with this book, and the reason I'm rating it as 4-star instead of 5, is that the last ~15% of the book meanders unnecessarily (in my opinion) and takes away from the impact that the book could otherwise have had. It feels like Liu Cixin wants to cram every idea he had but could not weave into the story towards the end of the book, in a faux-tie-up-loose-threads-journey-to-the-shire kind of setup.

Having said that, the first ~85% of the book is excellent and a fitting last book in the series.