After defeating Lucifer, Daniel Garner thought it was all over. But one of Lucifer's generals, Alastor, who the hero killed in the basic game, apparently isn't dead at all. He is determined to not let Daniel get out of Hell in one piece, and so his fight with the hellspawn continues.
The expansion introduced two new weapons and offers 10 new levels, with new types of enemies to defeat, of course. Some of the new locations include an orphanage in the swamps, the city of Leningrad and a theme park straight out of hell.