3.5/5 Stars. Still enjoying this series a lot. But at this time I think the first book is still the best. There was a lot of great character work done in this 3rd book. Plenty of growth for Carl, Donut, and other characters that you get to learn more about. That was probably my favorite aspect of the book. There were also some really great tense scenes and battle sequences. But the level layout of the 4th floor was really boring to me and I found it hard to follow all the different train lines. Trying to keep a mental map in your head is damn near impossible. Still going to continue on with the series, I just hope the next floor is more interesting! The narration is still amazing!!