Ambient

Dust Devil (hazardous wind vortex, grows with every kill)

Mimic (mimics small items like weapons, supplies, or keycards)

Seeker (armor, active camo, corrupts robotic assets)

Stormbane (produces noxious drifting stormclouds, thrashing tentacles, will descend and swallow prey whole)

Void Gazer (distant demonic Void entity, sunders everything caught in its entropic gaze)

ATLAS mechs (manned by Pilots) - "Armored Terrestrial Logistic and Attack System"

Falcon (rocket launcher, cluster missile, tether mine, lateral dashes, hover jets, rocket barrage)

Firebolt (railgun, homing rockets, shield wall, sprint, tactical nuclear shell)

Onslaught (chaingun, heat blast, shoulder autocannon, gun shield, bullrush, homing burst)

Pulsar (plasma cannon, projects reflective particle shield, gravity bomb, sprint, particle accelerator)

Stryker (auto shotgun, broadsword, tesla missile, sword block, lateral dashes, phase dash, empowered sword, nuclear ejection)

Common abilities include regenerating overshield, ammo fabricators, reinforced armored hull/weapons, electric smoke discharge, expendable wrist-mounted plasma knives, Pilot ejection on self-destruct

Baalgar Lord (Annihilator Cyberdemon)

Immune to hard falters, splash damage, and plasma

Phase 1

Blade and cannon can be crippled but regenerate

Charged laser blast

Energy waves from arm blade

Explosive foot stomp

Fissure wave

Flaming bullrush

Redirects soul attacks

Rocket volley

Phase 2

Same as above; grows in height and power

Blade and cannon are more resistant

Earthshatter - Generates mountain ranges, volcanoes, lava flows

Groundspike wave

Meteor shower

Missile bombardment

Barons of Hell

Common (throw fireballs, project flame shields)

Deathclaw Baron (slicing claw waves and groundspike waves)

Common abilities include being able to indefinitely summon legions and empower them with increased aggression and speed, induce environmental catastrophes, create unique demonic constructs, rage mode when companion is slain, and resistance to fire/lava.

Cacodemons

Cacospectre / Cheshire Caco (partial invisibility, teleporting, creates aggressive illusions, attacks have slowing stasis fields, focused energy beam, two eyes at ends of destructible arms, can vanish to leave only mouth behind)

Common (lightning balls, lightning burst)

Cyber Cacodemon (armor, electric hazards, no weak spots, hazardous holograms, lateral dashes)

Carcass

Carrion (mutated mimic; highly intelligent/adaptable; consumes demons/humans to gain biomass and evolve powers; resistance to electricity, weakness to fire; travels via pipes/vents)

Maggot (2-headed humanoid chimera; impaling tongues, spits acid)

Constructs

Blood Prism (crystal and gore; beam attacks, overshield, armor, destroys cover)

Nuclear Godkiller (nuclear fireballs/beams/firewalls)

Rustmonger/Triceratoptron (ancient Martian war machine; proton beam, cluster missiles, teeth/claw attacks, soul shield, armor, subterranean burrowing)

War Husk (flesh and metal, consist of human Pilot inside crude cyborg mech; tentacle arm attacks, binding tentacles, armor, plasma mortar)

Cybruiser (Extinctor Cyberdemon)

Body is resistant to guns but not spells; cannon and robot leg can be crippled with guns

Enhanced vision

Explosive lightning strike

Explosive runes throghout arena

Foot stomp creates area-denying electric barrier

Sticky explosive bolts

Summoning

Deraki (sapient humanoid demonic race)

Ancient (spike throw, demon summon, demon control, burrow)

Desolator (Shock Disruptor, claws, illusion, flight)

Ravager (Reaper rifle, shell shield, stun baton, leap)

Vile (scorn bolts, chain bind, mana drain, blink teleport)

Gargoyles

Hellbats(flight, spit fireballs, talon strikes)

Griefers (sapient cyberdemonic UAC operatives)

Camper (grapple hook, shield cover, sniper rifles)

Gambler (obnoxious cosmetics, RGB Field, Midas Grenades, calls in Loot Boxes containing rare and powerful drops)

Hacker (sonar pulse, aimbot, smart pistol)

Rager (heat wave, riot shield, explosive charge on low health, constantly spouts vulgarities that make zombies more aggressive)

Rambler (hijacks PA systems, Sentry Turret, Kinetic Mine)

Stalker (active cloak, silence pistol, Neural Knife, personal teleporter)

Spammer (over clock, satchel charge, grav mines, grenade launchers, drops grenades on death)

Common abilities include using environmental supplies and calling in air support, resupplies, and reinforcements; frequently infight among themselves and other demons to scavenge supplies or achieve killstreaks; besides explicitly listed loadouts, can use standard UAC weaponry and ordnance

Goetic Troopers (sapient cultists UAC operatives)

Disciple (dual knives, knive block, spawns enemies from demon gore, turns supplies into mimics, psychic beam when Slayer is in Clearsight, releases malware worm on death, psionic emitters that hasten demons or slow Slayer)

Preacher (blade chain, chain parry, explodes demon gore, spawns Evil Eyes/Fireblu Torches, psychic scream when Slayer is in Clearsight, injects malware viruses on contact, psionic emitters that heal demons or damage Slayer)

Haunters

Briers (the Upside-Down, phase through walls/ceilings and launch thorny vines/barriers)

Gaunts (shamblers that spit harmful blobs of tissue)

Hell Hunters (elite Hell Knight enforcers)

Armored Hunter (regenerative Spiritual Armor, which is invulnerable to all attacks except BFG and soul weaponry; lighning balls, ground shockwave, electric burst when armored; lightning strike, anti-explosive discharge, and deflective particle shield when unarmored)

Brawler Hunter (base powers include explosive melee strikes, flaming groundspike wave, and ability to deflect Blood Punches; in 1st phase is resistant to melee attacks; in 2nd phase is resistant to ranged attacks, goes Berserk, gains melee combos, Meteor Strike, grabbing crush attack and powerful fireball)

Helltime Hunter (in 1st phase has buffed speed, can deflect bullets, has powerful scythe charge and speed-draining energy wave; in 2nd phase loses speed buff and previous attacks but gains short-range teleport; in 3rd phase regains speed buff and original attacks, and gains rapid-fire speed-draining projectiles)

Hell Knights

Blood Knight (incendiary hazards)

Bruiser Knight (armor, dual rocket launchers, machine gun, battering ram, mini pulse cannon, retractable face screen)

Common (fireballs, ground slam, heavy punches, may catch grenades/rockets and throw them back)

Cyber Knight (armor, minigun)

Cyber Paladin (armor, reflective shield, rocket launcher)

Falcon Knight ("Birdman")

Hellgrowth

Core Tentacle (hidden tentacle nest with secondary razor tentacles and primary tentacle with eye that shoots fireballs and flame waves)

Flesh Spawn (floating suckers)

Gore Mouth (kills and devours prey, assimilating them into Hellgrowth)

Gore Nest (serve as demonic communication/reinforcement channels to Hell; summon demons when destroyed)

Pustule (burst in acid)

Tendrils (bind and drag victims towards Hellmouth)

Tentacle (strike at victims)

Imps

Common (throw fireballs, can crawl on walls and ceiling)

Dark (fast fireballs, homing fireballs)

Nightmare Imps (fast/homing fireballs, short-range teleports, mid-range phase shifts during which turn invisible, cannot pass through walls but phase-shift modules are reinforced)

Pyro (incendiary attacks)

Splicers (no ranged attacks, appear in male and female varieties)

Large

Basilisk (flying serpents; highly resistant to damage)

Bonecrawler (skeletal beast)

Hellstorm Pylon (living perimeter cannon; shoots lightning and railgun slugs)

Lost Souls

Common (swarm and bite target)

Cyber Soul (fires shrapnel, kamikaze on low health)

Ethereal Soul (spirit Lost Souls; invulnerable to physical attacks except plasma, resurrect one common non-gibbed demon at a time)

Forgotten Soul (psychic screams that bypass ARMOR, may spawn Ethereal Souls on death)

Rictus (shoots fireballs)

Terror (kamikaze)

Tormented Soul (replaces standard zombie head and turns host into Burning Zombie)

Maledict

Vulnerable to lightning

Destructible armor; flesh is vulnerable to slicing but armor isn't

Phase 1

Gravity control

Lightning breath

Psychic roar that bypasses defenses

Phase 2

Same as above; gains wings

Black hole generation

Energy waves from wings

Hurricane winds

Lightning bombardment

Portal generation

Summoning

Time dilation

Mancubi

Common (partially armored, produce hazardous discharge, shoot flaming bile, shoot harpooning tendrils from mouth for strong bite, can summon lesser demons)

Common abilities include resistance to acid/nukage

Miscellaneous

Devil Cricket

Ember Spider

Grell (floating mouth; spits acid)

Gremlin (small brainy spider)

Hellion (humanoid Hell centipede; burrows through ground and launches surprise attacks)

Inout (large inside-out beast)

Liminal Mimic (mimics human survivor from a distance)

Mother Demon (human-demon chimera; flame pillars, flame waves, flame walls, telekinetic throws, spawns Putti)

Nightflyer (swarm behavior, slicing dive, spike-feather projectiles; resistant to most damage except fire and explosives)

Pale Spider

Putti (insectoid infant-like creatures; stingers, vomit/launch corrosive effuvium)

Scrag (floating snake-like humanoid; spits fireballs)

Scylla (impaling charge, fire breath, spike breath, poisonous tail stings, grabs and swallows prey whole)

Shadow (life-sucking parasite that clings onto prey)

Shrike (biomechanical pterosaurs; flight, missile/beam attacks)

UAC Blackwatch Trooper (short-range phase shift, active camo, Neural Knives, swarm pods, explosive self-destruction on death)

Velcore (impedes Slayer from resupplying from demons; spike tail grapples demons away from Slayer; eye beam kills weak demons)

Vulgar (undead demonic vulture; throws fleshy rinds)

Waspids (vicious swarms; spit noxious venom)

Pinkies

Blood Pinky (fully armored, leaves fire trail, can breath fire at short range)

Cyber Pinky (armored front, destructible cybernetic back, maneuverable and agile, suicidal charge when robotic back half is destroyed)

Common (partially armored)

Pinkinator (projectile acid attacks, spawns Pinkies, crushing attacks)

Spectre (unarmored front, reinforced cybernetic back, maneuverable and agile, spectral bullrush that bypasses defenses)

Prowlers

Common (powerful claws, launches fast projectiles that lead target, rapid teleportation and short- and mid-range, purple flame wave; resistant to falters, fire, and soul weaponry)

Possessed Pilots (intelligent UAC operatives)

Active Camo (partial invisibility)

Echo Drone (distracting hologram)

Kinetic Armor (deflects bullets; ineffective against plasma, melee attacks, or splash damage)

Over Clock (boosts speed)

Common abilities include regenerating suits, ammo fabricators, wall-runs, lateral dashes, grapple hooks, ordnance knives, and calling in ATLAS mechs; can command Griefers and Revenants

Revenants

Centurion (Hellish Revenant; rapid-fire pulse cannons and laser beams; fireballs, flame waves, life-draining melee attack)

Common (missile launchers, homing volleys, lateral dashes, limited flight, summons lesser demons)

Cyber Revenant (armor, plasma rifles, laser beams, overclock, repulsive melee strike, enhanced flight)

Ghoul (active camo, Vortex Cannons, teleports instead of dashing, reinforced phase shifts instead of flying, spectral melee attack that bypasses armor; vulnerable only to Lightning Gun while shifted)

Robotic

Argus (agile/nimble flight, hyperspectral omnidirectional vision, active camo, homing micromissiles, explosive seeker microbots, eletric tail strike)

Assault droid (armor, heavy infantry firearms, explode on death)

Assault drone (flight, machine gun/rocket launcher, kamikaze on low health)

Attack drone (bomber/gunner)

Black Bee (teleportation, flight, javelin gun, stun bombs)

Hunter Droid (armor, heavy pulse cannons, shield wall, plasma punches, ground slam, resistant to demonization)

Hunter Drone (flight, armor, heavy pulse cannons, kamikaze on low health, resistant to demonization)

Mk 3 Scout Bots (recon models; blink teleport, translocation orb, overshield, portal guns that project stable wormholes)

OCULUS (flight, overshield, laser beam, distracting holograms) - "Optic Cerebral Unit and Logic Utility System"

Security droid (light infantry firearms)

Security drone (flight, machine gun/plasma rifle)

Viscera Cleanup Drones (simple pincers and cutting laser)

Resist infighting among themselves and continue fighting despite dismemberment, but may target other demons even if corrupted

Summoners

Common (lightning strike, lightning barrage, summons and directs lesser demons)

Dimensional Shambler

Gehenna (razor strings, razor webs, reanimates intact demon corpses into undead Marionettes - can only be destroyed with fire, explosions, or by slicing strings)

Harvester (plasma fireball/volley, plasma barrage, life force drain, summons corrupted robots)

Common abilities include overshields and phase teleports, during which they're almost invulnerable (except to Lightning Gun)

Verimor (intelligent robotic alien race, once allied with Argenta in Corrax Alliance)

Drone (zero-point disruptors/nuclear decoherers/positron beamers; melee arm)

Vindicator (unique enemy; flame sword, ion cannon, blink teleport)

Common abilities include mode switch (transform between agile walking mode and faster vehicle mode - either land- or air-based) and reinforced armored bodies capable of regeneration (composed of virinium, a programmable metallic matter highly resistant to damage)

Zombies

Apostate (explosive Hell zombie, spawns Ricti Lost Souls on death)

Axe zombie (slightly faster than standard zombies)

Burning zombie (incendiary attacks)

Chainsaw zombie (slightly faster than standard zombies)

Chainstrosity (4 chainsaw arms, 5th chainsaw on face, destructible armor resistant to bullets/shells, enhanced mobility, blade vortex attack)

Damned (Hell zombie)

Elite Commando (E1M1 chaingunner; armor, minigun)

Exo Zombie (armor, SMG gauntlet, micromissiles, sticky rocket, enhanced mobility)

Flamer soldier (flamethrower, air blast)

Ghost (spectral humanoid; pass through surfaces, bypass ARMOR, trail after-images, resistance to falters, invulnerable to physical attacks except plasma)

Glitcher / Tentacle Commando (enhanced speed, erratic teleporting, resistant to most damage, immune to headshots, extendable dual tentacle arms, can telefrag)

Headless Kamikaze (holds 2 Terrors in hands)

Hell Razer (Argent beam cannon, heavy fireballs, explosive heat waves)

Loader worker (industrial exo; armor, chainsaw/jackhammer/drill/gripper claw)

Poltergeist (vulnerable only in Clearsight; offensively launches nearby ammo packs)

Possessed engineer (explosive)

Possessed scientist

Possessed soldier (shotgun/rifle/plasma/railgun/rocket/ssg, can throw grenades)

Possessed worker

Radsuit zombie (filled with hazardous nukage)

Sawcubus (dual chainsaws, biting mechanical head, enhanced mobility, resistant to bullets/shells)

Shield soldier

Trites (zombie heads that turn into spider-like creatures; may spawn from zombie corpses after being separated from body or if head is mostly intact)

Z-Sec (resist infighting, short-range teleports, mid-range phase shifts that lets them pass through walls and turn invisible, rapid-fire Vortex Rifle that shoots through walls; vulnerable only to stun bomb or lightning gun while shifted)