Warhammer 40,000: Carnage

Carnage is a single-player, action, side-scrolling shooter where players take on the role of one of the available Space Marine Chapters, which is a change from the strategy-oriented style of most Warhammer 40,000 games. There is a heavy RPG element where players progress, level up their Space Marines and collect Wargear to become more powerful as missions become more difficult. Players can move left and right, jump, and block, with two main attack buttons: shoot and melee. (wikipedia.org)