Layers of Hell: REQUIEM

Crossover between DOOM and Hazbin Hotel; takes place at the start of Hazbin Hotel Season 2, and the end of DOOM: The Dark Ages...

The Slayer, dragged into Hell after the fall of Argent D'Nur, has spent centuries slaughtering demons and wreaking havoc in an endless conquest to eradicate his universe of the interdimensional threat. In the midst of this carnage, the Slayer suddenly finds himself and Valen the Betrayer caught in an Argent rift that drags them into an entirely separate universe; one with similar qualities and atmosphere to the Hell the Slayer had known, yet different and unfamiliar in far too many ways. His mission is renewed: find a way out of this fake hell and return to his universe to continue his endless carnage.

Meanwhile, Charlie and her gang are just recovering from the assault of Heaven's Exorcists, Adam's death, and Sir Pentious' unexpected redemption. As Vaggie, Angel Dust and others are helping the hotel back on its feet, Charlie is making plans on what to do next; and how best to prepare against the next invasion, now that Heaven feels threatened by her actions.

Without knowing, the two forces inevitably collide; and so the story begins with hellfire and divine brimstone.

(Written for pure fun)