Blood Knights is a hack and slash action role-playing game for Microsoft Windows, PlayStation 3 (through PlayStation Network), and Xbox 360 (through Xbox Live Arcade). The game was developed by German studio Deck13 Interactive and published by Kalypso Media, also from Germany. Blood Knights was released on 1 November 2013 for the Xbox 360, 13 November 2013 for the PC, and 19 November 2013 for the PlayStation 3.
The game features two playable characters: Jeremy, a vampire hunter, and Alysa, a vampire that Jeremy became ritually bound to, on a quest to retrieve an artifact that can cause cataclysms. The game features both single player and local cooperative gameplay (co-op) modes, but does not allow for online co-op. Blood Knights received generally negative reviews upon release, with a large number of critics faulting the game for showing a lack of creativity and having uninteresting gameplay.
The game combines platformer, role-playing, and combat elements. Players move about several levels, including a forest and a castle, using precision jumping and puzzle solving to move about the level. Players can discover equipable weapons and armor that improves effectiveness in combat by exploring levels for chests. Combat takes the form of set piece battles, in which a number of enemies appear and must be defeated before the player can continue to progress through the area. These enemies include human outlaws, demons, werewolves, and other vampires. The game also contains boss battles, in which the player must defeat a significantly stronger enemy that is aided by normal enemies.
Players assume control of Jeremy, a sword-wielding, melee-focused character, and Alysa, who uses crossbows to deliver ranged attacks. The game can be played as a single player game, in which the player alternates between controlling Jeremy and Alysa, or as a local co-op game, in which two players play cooperatively, with one controlling each character. Blood Knights does not support online co-op. Like most hack and slash games, the control scheme is minimal.
When controlling Jeremy, players can chain attacks using one button (the X button on the Xbox 360), and can use a number of special attacks that have a cooldown timer, including a heavy blow, a whirlwind attack, and a power that draws distant enemies to Jeremy. While controlling Alysa, the game functions as a twin-stick shooter, in which movement is controlled by one thumbstick or set of keys, and firing weapons is controlled by the other thumbstick or another set of keys. Alysa also has special attacks, including the ability to fire flaming arrows and a grenade attack. In single player gameplay, the player can switch between Jeremy and Alysa by pressing a button (the Y button on the Xbox 360). Players can transfer health, in the form of blood, between the two playable characters, healing one at the expense of the other.
Blood Knights takes place in a fictional version of Earth in which humans and vampires are at war. The main character, Jeremy, is the captain of a holy order that fights vampires. At the beginning of the game, the order travels to a set of ruins to protect the Blood Seal, a powerful artifact, from being captured by the vampires. The order suffers heavy losses in the attempt, and in desperation the priest Bartholomew uses a ritual to bind Jeremy to the vampire Alysa. During the course of Jeremy's attempt to retrieve the seal, he is turned into a vampire, and the vampires seize the seal themselves. With the seal removed from its resting place, the moon begins to crack apart, causing unpredictable and violent tides. Because Jeremy has been turned into a vampire himself, Bartholomew and another member of the holy order, Castello, kick Jeremy and Alysa into an abyss inside the ruins, abandoning them for dead. Castello assumes Jeremy's place as the captain of the order.
Jeremy and Alysa escape the ruins and pursue the vampires that stole the Blood Seal. Castello and the holy order are also pursuing the vampires. Jeremy and Alysa reach Godskeep, a human stronghold. In order to pass through the town, the pair must first rescue the town's sheriff, who went into a nearby forest with the town guard in an attempt to kill the powerful vampire Blood Fox. Jeremy and Alysa defeat Blood Fox, and in the town, Jeremy encounters Bartholomew, who split from Castello after an argument. Bartholomew tasks Jermey with recovering the Relic of Light, a powerful weapon that can be used against the vampires, in order to prove that Jeremy is still loyal to the order.
After retrieving the weapon, Jeremy is informed that the Lords of Pikehold, a group of knights that defends the area, have defeated the vampire army carrying the blood seal. On his way to Pikehold Castle, Jeremy is then ambushed by Castello. The pair fight Castello, who falls off a cliff after being defeated. Inside Pikehold Castle, Jeremy discovers that the Lords of Pikehold have become thralls to a succubus. Jeremy and Alysa defeat the Lords of Pikehold and the succubus, who informs Jeremy that the Blood Seal has been taken by a vampire mage to the top of a mountain.
Bartholomew meets Jeremy and Alysa at the top of the mountain, and informs the pair that the vampires have already summoned a powerful demon that will slaughter mankind. Bartholomew has called upon the army of Rome, led by the powerful First Paladin of Rome, to defeat the demon. Jeremy, knowing that the First Paladin of Rome would kill him and Alysa on sight, sets off to defeat the demon before the army of Rome arrives. When Jeremy and Alysa confront the demon, it explains that it was summoned because the humans have become too numerous, and with increased numbers they have gone from fearing vampires to hunting them. Jeremy and Alysa kill the demon and Bartholomew recovers the Blood Seal. As he does this, the First Paladin of Rome arrives and demands the seal for himself. Bartholomew gives the seal to Jeremy instead, and battles the Paladin to delay the army of Rome.