Hellion is a 3:e person shooter coop. The game supports 4 players over LAN and the essens of the game is action. You take the roll of an demon that has been summoned by a group of humans and you were not very happy about it. You i.e. the demon has the ability to absorb any kind of weapons and merge them into your own. For example a shotgun and a minigun, creating a shotgun shooting at the rate of a minigun.