Daemon Vector is set in medieval times where European adventurers recover artifacts from Asia. Now one of these artifacts turns out to bear a curse and transforms all nearby humans into zombies. The player takes the role of a hero to wipe out the zombies.
The gameplay is a classic hack & slash experience: The camera is fixed behind the player character, who performs hits and combos by using the mouse buttons. Combo attacks can only be used when the player has enough special energy, earned by performing regular attacks. The goal is to clear each room of all zombies before unlocking the next one.
The player can choose between Asgard, who fights with swords, and Rhea, who prefers heavy but slow weapons. Each character has unique combos and attributes, such as health or armor, which can be upgraded with experience points earned by killing enemies. After every level, the player can equip special items that grant abilities like poison resistance.