It's my second Matthew Reilly book, since I read Scarecrow earlier this year.
Reilly's books are very easy to read, involve little thinking, and they're fast paced.
I didn't realise that The Five Greatest Warriors was the final book in a trilogy - but it didn't matter. The story stood alone, and had enough references and explanations to what had happened in the past to be able to read on. Like I said above, Reilly's books are not complex, and don't involve much thought.
This story could have been filled with exactly the same characters as Scarecrow. Reilly is not god at character development. They are cardboard cut-outs. But there is so much action that there is not much time to get to know the characters anyway - they are just parts of the action. The lack of character development, though, causes the reader to have no emotional connection with them.
Unlike when I read Scarecrow, however, I had an emotional connection with the theme of this story. It was much more interesting than an international bounty hunt. The Five Greatest Warriors was an elaborate 'game' to save the world, involving ancient artefacts, links to religion and ancient civilisations, meteorology and astronomy. It would have taken Reilly some time to research.
This book played like an action movie in my mind, with characters with unreal weapons and technologies, and amazing displays of speed and strength.