Just As Long - And *STILL* Only Tells One Part Of The Story. As the title of this review harkens back to my original review of the first book in this series, PARADISE-1, I should note that in that review I specifically proclaimed "I personally would love a sequel that picks up moments after this book leaves off". Which is *exactly* what we get here. So yes, this is one of those series you really do need to read in order - and in this case, that means sitting down for about 1400 pages of scifi space horror.
I named a lot of different scifi franchises in that review of PARADISE-1, and while they are spot on for that book, this book feels more like a different scifi franchise, one that first released months after that book - the new (now 14 month old) STARFIELD. Players of that game will note that many of its planets are barren, rocky, and almost entirely devoid of any life at all - even humans looking for a pit stop. Which is largely the case with this book, and just as Starfield can admittedly get a touch repetitive in the "find this spot, get attacked by whatever is there, kill it, move to the next spot" mechanics... yes, that same type of storytelling comes to bear here.
Where Wellington shines, and truly helps the pacing and thus makes the read feel nowhere near as long as it actually is, is in his use of shorter chapters. There are nearly 120 chapters in this book, and thus by the time you're in the Chapter 30 range and roughly 25-30% done with the book... you find yourself looking back and thinking you haven't actually been reading that long. Even at Chapter 100 with another 100 pages or so left, you still don't think it has been that long, nor do you really think there is that much longer left. Or at least this was my own experience. :)
And yes, this one also ends with the reader demanding to see the next book immediately, as where the first book left off at a certain point that *demanded* a sequel, here things have changed and now it is because of the specific course of events and those still to come that the reader will be desperately waiting to see what happens next.
One note here, more on my personal experience, but possibly informative for others as well: I "only" read 335 books in the 644 days between reading PARADISE-1 and REVENANT-X, and Wellington does a solid job of bringing the reader back into the fold rapidly, even if you don't remember exact details of the prior book.
Very much recommended.