Percy and the gang certainly have come a long way since The Lightning Thief. I waited for a long time before reading starting this series, because I tend to avoid books that get a lot of hype. But eventually, I caved and read it. And I'm so glad I did.
Some of the battle scenes got dull after a while, but I'm so happy with the ending I don't even care. The war was won, Kronos was defeated for now, the gods are trying to be better...things are good, but there's mor adventures to come. And Percy and Annabeth! I'm not too fond of this pairing, but I like how they have such a chemistry and are so close and such good friends.
Overall, I'm really happy with the way this series has progressed, and I can't wait to read more. On to Heroes of Olympus!