I'm sad that this was the last book in this series. I didn't want it to be over. This is one of the best series that I've read in a long time.
This book is pretty much nonstop action from page 1. It's not as humorous as the other books, and Percy isn't as upbeat as he was in some of the other books, but that's understandable because he's fighting in a war. The book still does have some funny moments, and the ending made me happy. The author did a great job wrapping up the Percy/Annabeth romance. The kissing scene at the end was very cute.
Like the other books in the series, there were noticeable typos in this one, and the plot was slightly predictable. I predicted how Luke/Kronos was going to die, and I was right. I also predicted what was going to happen to Rachel, and I was right. Correctly predicting the plot is a little annoying for adult readers, but young readers might not find the series as predictable.
My favorite part of the series (aside from the humor and the twisted mythology) was the fact that there were no good guys in the war. Both sides had major flaws. Neither one would turn the world into a utopia. Percy questioned his decision to support the gods many times. I thought that was very realistic. I liked that Percy used his new status as a respected war hero to try to change how the gods treated their children and the minor gods.
Overall, this was a great series, and I'd recommend it to everyone, especially parents who need books for reluctant readers.