The final part of the trilogy. The grand finale. Except that it isn't. We get closer and closer to the end with no sign of things being wrapped up until Joshua finds the naked god who bestows him temporary powers and he sorts it all out. It reminded me a bit of the q continuum from star trek without the wit.
The rest of the book is just spinning out the logical consequences of the events in the first two books. This Hamilton does very, very well. The worldbuilding and plotline domino effects are what make the series worth reading.
Ultimately, I feel like this story could have been much tighter. 6000 pages could easily have been 4000.