Action driven rather than character driven. I could not sympathize with or become interested in any of the characters. Frankly, I didn't care what happened to them. The ending of the book was more of a relief than interest in finding out how it ended. This was Percy Jackson without Percy or Annabeth. A simple plot with simple characters.
The only reason I picked up the book was one reviewer saying how much greater it was than Harry Potter. They are wrong. Harry Potter, Percy Jackson, and the Hunger Games are leagues above Artemis Fowl. If you are looking for mass market, Artemis Fowl may interest you. If you are looking for literary, you will be disappointed.