"Hexen: Beyond Heretic, released as simply Hexen for some ports, is a first-person shooter video game developed by Raven Software, published by id Software, and distributed by GT Interactive beginning on March 16, 1996.
Following the tale of D'Sparil's defeat in Heretic, Hexen takes place in another realm, Cronos, which is besieged by the second of the Serpent Riders, Korax. Three heroes set out to destroy Korax. The player assumes the role of one such hero."
Source: Wikipedia, "Hexen," available under the CC-BY-SA License.