This is by far the best book in the series so far. 1 set the stage, 2 was some side questing, 3 took us off the rails while diving into the NPCs, but 4 took all of that and really propelled us into a much greater meaning for Carl and his unique purpose. Throughly enjoyed this part of the series and thought the ending was fantastic. Very deep dives into very clever and fun aspects of the dungeon system. Can’t wait to jump into book 5!