GlasyaLabs12/01/2017 addon

Something different in the vein of a challenge map. It's mostly happy fun times with the rocket launcher, though you really want to grab the two secret weapons. You can tackle the wings in any order you like, but you can't leave until you grab each key. There's are three Cyberdemon's, a Mastermind, and even some fun with the barons. The finale involves a slightly atmospheric fight to power down the Hellgate.

Glassia-labolas is a high president of hell who commands 36 legions. He appears as a dog with griffin wings.

Let the Obsession begin. Again. This time, the entire forces of the netherworld have overrun Earth. To save her, you must descend into the stygian depths of Hell itself! Battle mightier, nastier, deadlier demons and monsters. Use more powerful weapons. Survive more mind-blowing explosions and more of the bloodiest, fiercest, most awesome blastfest ever!