Yes, the book was criminal. But in a good way. I hadn't been into science fiction before Artemis, but it totally got me into that whole genre.
Colfer has a good sense of humor that shines through in the book. The irony in it is funny.
The characters are well-developed and three-demensional. So well-developed that I actually started infatuating love towards Artemis (crazy, I know - absolutely psycho.) But that's over.
My point is, there is excellent character development. They all have separate and individual personalities that are quite comical put together. The language is also strong and well-written.
Definitely worth reading, guys!