Dark Salvation

Dark Salvation is about a dead woman named Talia who becomes possessed
with an object called the Spirit Crystal. Her parents released the
Lucafix demon through one of their cult meetings and she has been pulled
into the Underworld to purge it of evil.

Experience fast paced, old school FPS action at its scariest. Face
multiple monsters within dozens of indoor, outdoor and underground
levels. Wield a deadly arsenal of weaponry in which Talia can cast magic
spells from each weapon.