Space Hulk: Vengeance of the Blood Angels is a mix of a First-Person-Shooter and a tactical fighting game set in the Warhammer 40k background. The game follows the fight between the Terminators of the Blood Angels Chapter of Space Marines and the Tyranid Genestealers.
You control up to ten Terminators, giving them orders in a tactical screen or taking over one to navigate a 3D environment and fight the Genestealers. This mix of tactical planning and First-Person-Shooter action provides a good balance.