While it is well known that Doom has influenced that many demons in Lycanites Mobs, outside of the hellish nether there are many more creatures. Heretic and Hexen are both classic games that were built on the Doom game engine (id tech 1), these featured all kinds of interesting monsters that I couldn't resist bringing over to Minecraft!
Here's a slightly modded (custom player classes and weapons) play-through of Heretic:
Update: Dragons Roar - Version 184.108.40.206 for Minecraft 1.11.2
A big thanks to @UndulateOak for doing the voice announcements of these new events!
Fixed Boss Events spawning random subspecies instead of being exact based on the type of Soulkey used.
The Roa's whirlpool will no longer affect entities with a high momentum in order to prevent them fling entities too far as well as allowing them to combine their whirlpools together.
New global Mob Event setting added: Aggressive Events, if changed to true, mobs spawned from events will immediately target the player and then will home in if close enough.
Changed the default spawn settings for Inerno mobs, you will need to delete this config file in order to use the new settings or manually update it. The block costs have all be reduced (none higher than 16) as 32 was too much causing the mob to not spawn.
Rahovart's Hellfire Wall and Hellfire Fire now use new textures in order to make them more distinguishable.
Doubled the rate that Astaroth heal Asmodeus in phase 3.
The Wildkin should no longer have a solid collision box.
Update: Dragons Roar - Version 220.127.116.11-1.10.2 for Minecraft 1.10.2