Credits:

 Teleport Fog: edited from http://opengameart.org/content/animated-particle-effects-2 (OpenGameArt, para)
 Glory Killing player sprite: fist marine by Mark Quinn
 Hud message on actor: Caligari 97, AlienOverlord
 HasRoom(class, x,y,z) function: from AcsUtils by Korshun, DjSkaarj, Monsterovich, TechnoDoomed1
 Vulgar (made into Harvester): Sprites by Eriance
 Repeater Zombie (made into shotgunner): Sprite edit Eriance, Xim, Ghastly_dragon, Tormentor667, Captain Toenail
 Zombie Fodder (made into Unwilling): Horror Movie Guy, minimum recolor by DBT
 Acid Pool (made into rocket targeting): from ZBlood+ by Michaelis based on ZBlood by Psyren, Doorhenge, retextured by Michaelis
 Hit Beep: Michaelis
 