i really enjoyed this book because of the balance of emotional scenes and actions scene. they both balance each other very well in this book . i also loved how we got to see Tartarus and Nxy. i loved how strong percy and annabeth were throughout the book. the character developments were just right because we got to know nico and his true reasons and feels which were heartbreaking, to think of all the pressures he must feel and that's why we never got to know him as well. hazel character development was interesting because we not only found out about her magic but more about how she thinks and feels about the group she is very mindful of what her team mates goals and how they think. my favorite thing about this book is how percy and annabeth survived tartarus. now percy has met a lot of important and evil gods and has survived them. i also love leo in every book he really does break the tension and adds a lot of humour to the book, and i like how rick riordan states that in his book so all the other team mates realise how much he adds to the group.