Planet of the Damned by Harry Harrison

This Halcyon Classics ebook is PLANET OF THE DAMNED by eminent science fiction writer Harry Harrison. Brion Brandd has just won the Twenties, a global competition to test achievements in 20 categories of human activities -- but before he can enjoy his victory he's recruited to leave his homeworld to help save Dis, a barren, burned-out cinder of a world populated by homicidal maniacs. PLANET OF THE DAMNED was nominated for a Hugo award in 1962.