Lucifer is the lord of Hell.
Lucifer is the lord of Hell, who uses Purgatory to advance his troops for the Final War.Daniel was given a task to kill four generals. With the aid of Eve, he kills Lucifer's armies and eventually his Generals. They meet Asmodeus, a demon that
saved Daniel's life (later it is revealed that he's actually Lucifer).
After killing Alastor, he sees Asmodeus again. Asmodeus sees that Alastor is dead and is awestruck at Daniel's power. After looking at Alastor's corpse, Asmodeus transforms into Lucifer. Lucifer tells Daniel that he didn't want to reveal himself and, eventually, he returns back to Hell (this only happens in Daydream, Insomnia and Nightmare difficulties).
Defeating Lucifer (Excluded in Trauma)Edit
Eventually, Daniel decides to save Eve. Samael tells him where Hell's gates are and also tells him there's no way back if he wants to quit. He must kill Lucifer to be able to exit Hell.
When you finally enter Hell, you must kill 66 ghost monsters in order to morph into demon and teleport to Lucifer's lair. There, he will launch meteors at you. Shoot the meteors in Lucifer's direction to damage him. After he screams, he will throw his sword at you. Within the next three seconds, shoot the sword back at him to finish him off. Defeating him will open a Blue Pentagram at the end of the level.