Thanks to the following people for their resources:

Blood Demon
Decorate: Carnevil
Sounds: Id Software
Sprites: Id Software 
Sprite Edit: Neoworm, Vader 

Plasma Zombie
Decorate: Bouncy
GLDEFs: Dreadopp
Sounds: Id Software
Sprites: Id Software 
Sprite Edit: Tormentor667

Satyr
Decorate: Vader
Sounds: Id Software, Vader
Sprites: Id Software 
Sprite Edit: Vader 

Soul Harvester
Decorate: Vader, Tormentor667
GLDEFs: Keksdose, Ghastly Dragon
Sounds: Id Software, Wildweasel, Vader
Sprites: Vader

Zombie Marine
Decorate: Bouncy
GLDEFs: Dreadopp
Sounds: Id Software
Sprites: Id Software 
Sprite Edit: Ixnatiful

BGun Base graphic
Duke Nukem ProASM's Duke Nukem TC Source

MarbHiss texture
SkullTag

Spider Webs
Heretic

Music
Alexander Brandon

Sounds
Hexen
Quake
UT
AVP

