Hitman: Absolution Professional Edition (PC Digital Download)

The Professional Edition includes:

a 72-page Digital Artbook

A Behind The Scenes "Making of video"

"Agency Gun Pack" DLC, which includes an upgraded silencer and laser sights and the following exclusive weapons:
Agency Jagd P22G: A modern top-tier pistol
Agency HX UMP: Powerful high-caliber SMG
Agency SPS 12: Brutal semi-automatic shotgun