This is copy and pasted from my Goodreads review.

Way too plot-based, and has too much mystery. It's to the point where I didn't understand the Godhead and Remanent Nation until 60% of the way through the book. I ended up only connecting with Minho, Issac, and Roxy, and that was basically only because they were the most fleshed out. Dashner definitely didn't spend enough time showing us each of the character's personality traits, their dynamics, and just ground work exposition that makes me FEEL for these characters. I know Dashner could have done so much better, as I read the first few chapters of Eyes of Mind (another series by Dashner) at the end of The Maze Cutter, and instantly felt that there was much more exposition and character ground work that made me FEEL for the characters than the entire Maze Cutter and its characters. :/ Honestly, I never leave 1-star reviews because I know how tedious it can be to create characters, a world, and a book, but this is my first one-star because it is just Dashner milking TMR and tarnishing the the main TMR trilogy and the respectable Fever Code prequel (we ain't gonna mention The Kill Order bc that's where this plot-based,  empty characters BS started). All in all, don't read this book for the lore (you can't even understand it), don't read this book for the characters (they don't matter), and don't read this book for the subpar plot (does not start, develop, or end in the best ways it could).

There is almost no reason to read this book.