Blood Knights

Combine your vampiric skills with the sharp edge of your blade in this medieval vampire hack‘n‘slay. Battle through hordes of monsters to restore your honor after you, a legendary and feared vampire hunter, have been turned into a vampire yourself!
Deck13 (Venetica, Jack Keane) brings you an action-packed RPG, where you can play solo or co-op: Switch between the close-combat warrior and the crossbow wielding vampiress at any time while in singleplayer; or play co-op with a friend, joining your forces to defeat the onslaught of the evil hordes. Strike down your enemies using devastating close-combat and ranged attacks or whirl your enemies around and suck their blood using your vampiric abilities.
Key Features:

Action packed combat, close or ranged, paired with RPG elements
Switch between two playable characters with vastly different skills on the fly
Whirl your enemies around and suck their blood using your vampiric abilities
Play single player or co-op with a friend, joining your forces
Interact with the environment using your attract and repel skills
Multiple choice dialogues will affect how the world perceives the player
Vampire story narrated with atmospheric cut-scenes
160 available weapons and 40 different armour elements
MINIMUM:

OS: Windows XP/Vista/7
Processor: Intel Pentium IV® @ 2.0 GHz or similar processor with SSE3
Memory: 2 GB RAM
Graphics: Shader model 3.0 hardware support, minimum 256 MB VRAM, NVidia GeForce 7900 GT / ATI Radeon HD X1800 or higher
DirectX: Version 9.0c
Storage: 3 GB available space
Sound Card: DirectX 9.0c® compatible sound card

RECOMMENDED:

OS: Windows XP/Vista/7
Processor: Intel® Core™2 Duo @ 2.6 GHz or similar processor with SSE3
Memory: 3 GB RAM
Graphics: Shader model 3.0 hardware support, minimum 256 MB VRAM, NVidia GeForce 9800 GT / ATI Radeon HD 4850 or higher
DirectX: Version 9.0c
Storage: 3 GB available space
Sound Card: DirectX 9.0c® compatible sound card