You don't clean up any mess (plays D3 right now). You are just a marine who gets in the middle of UAC's mess.

The Plutonia Experiment
After Hell's catastrophic invasion of Earth, the United States took steps to prevent such an invasion from recurring. The old UAC corporation was refounded, under completely new management (since the old trustees and stockholders were all dead, this wasn't much of a problem), and sent to research tools and technologies to prevent such an incursion from happening ever again. Though the invasion had been stopped, and the remaining demons were gradually being exterminated by mopping-up squads, it was clear that the powers of Hell remained strong. While the Spider Mastermind and Baphomet seemed to no longer threaten, who knew what else lay Outside? Waiting. Watching. Preparing. The new UAC began working on quantum accelerator devices, intended to close interdimensional gates at a distance and so prevent future incursions forever. The project began innocently enough. Naturally the scientists, in order to learn how to close Gates, had to relearn Gate technology first. This ability was rapidly regained. Perhaps too rapidly.

The Terror
Soon, beings from outside had their dire attention drawn to the new experiments, and then, one day, a Gate opened in the heart of the research complex. Unnatural horrors from the pit poured in, ravening for destruction. But the UAC scientists had learned their trade. The Quantum Accelerator Device performed perfectly in its maiden test -- the invasion Gate was closed instantly and permanently when the Accelerator flicked on. A cyberdemon, halfway through, was snipped in two when the Gate closed. Earth would now be safe from literal invasion by Hell. At least, once the technology could be set up around the globe. The next day, a ring of seven Gates opened, throughout the base, and a monstrous legion rampaged through. The Quantum Accelerator began putting out the Gates at once, and within an hour, six were closed. But the hellish army was now too strong, too numerous. The marines fought like mad dogs, but were finally pulled down by the enemies' claws. The scientists, marines, and bureaucrats were all slain or transformed into undead mankillers.

The Task
The Quantum Accelerator and its prototypes are deep inside the ravaged complex. A demon Gatekeeper guards them and mans the last Gate of Hell. The government, frantic that the Quantum Accelerator will be destroyed or used in some alien fashion upon us, has ordered all marines to the site at once, regardless of their location. You were on leave at the beach, only a few minutes from the complex, when you got the word. You suited up, grabbed a pistol, and raced your pickup truck to the complex. When you arrived, flashes of light, howls, and chanting could be heard from the interior. Corpses were scattered everywhere. Obviously the Gatekeeper was doing something inside -- something that would soon reach some kind of awful climax. You know that within an hour or two, an entire division of marines will arrive to assault the base with full artillery and air support. You also know that they will be too late. Far too late. The airplanes will be plucked from the sky by floating terrors, the cannons melted by diabolic rockets and fireballs, the soldiers blasted to shreds as they charge into the armored shell of the UAC buildings. In an hour or two, the monstrosities inside will have finished their awful task, and will be prepared, once more, to take on the world. It's up to you.

Hellish Factions

The Possessed-Zombies and lesser demons, their strength lies in numbers and corruption. Their leadership varies from demon to demon.

The Anomaly-The Spider Mastermind's army, fusing hellish intent and machine. They specialize in crafting cybernetic horrors from the vilest of technology. Their Hell Hunter, Invul

The Legion-Governed by the Baron Brusier Brothers, They enlist all but the darkests of evils in hell. Hell Hunter Bezerk

The Icons of Sin--- Awakened from their fossil prison, the Icon is a group of hellish titans older than time itself. Their Hell Hunter is Khronos.
Due to their ability to distrupt time, and summon evil so old it lacks corporeal form. Stealth units. Wraith, Vulgar, Specter's

Hell units.

There are variants from previous games, also I excluded some demons that wouldn't be useful. althought others might be mention depending.

Not all demons will be buildable by each side. while others are pretty much universal.

*Forgotten-Used in packes to scout and Heckle the enemy

*Lost souls-only the Anomaly can build these, they act as mini sucicide bombers

Z-sec-Assualt Rifle

Zombie Commando---Chaingun

Cherub-Stronger than the forgotten, it can shred enemy infantry pretty quickly.

Imp-Weaker but has a greater vision range and faster.

Hell Imp-The D1 brown version, stronger. fireballs explode

D1 Pinky Demon-Strong anti-melee unit. elite gets stealth.

Reverent-Heat seekers

Vulgar-Flamerthrower

Archvile-Summons a zombie by killing infantry, he also has the Ring of Fire.

Pigg Harvester. Using the D3 movie pinky. It eats garbage and corpses and provides some resources. It can also bites.

Vagary-uses her telekinesis to pull in enemy tanks

Mancubus- fires wads of burning flame.

Hell Knight-Hurls a powerful lob of burning green plasma for long ranged distances. He also can tear through metal.

*Hell Hunters- Invul, Berzerk, and Time.

Cacodemon-Maybe a carryall unit? haha

Pain Elemental-A hovering transport unit.

Special Case Units

These units are only buildable by their corrosponding faction

Baron of Hell- A much stronger version of the Hell Knight. He hurls
boulders of hellish plasma, nercofrying any poor soul into a zombie

-Guardian-while nearly blind, he packs a powerful punch. This guy can decimate buildings and armor like an open flame does to butter.

-Spidermaster Mind-A towering spider that sits upon a high powered plasma Chaingun. Also its rumored that he can mindcontrol nearby units.

-Cyberdemon-Hell's greatest warrior. A towering archdemon that can launch a Trio of rockets, and crush enemy tanks.

-Maledict-Older than terror himself, he can rain down burning meteors of molten hellfire. Or spit wads of flame.

A Rough structure list. just to get ideas going.

Gargoyle Turret. A basic defensive structure.

Spire of Pain- RP can make the tesla bolt black or red as an apperance as a whip.

Slaughter House/ Pig Pen/Meat Farm..etc.- The Refinery, it also acts as a grinder.

Soul Batteies/Blood-Power Plant, like the BioReacter.

Spawning Vats/ Sigil- Barracks, one for the Anomoly and the other for the Structures.

Hell factory/Abyssal Chamber- War factories.

Tower of Babel-Comm tower

Neurosphere/Black Citadel- End case units etc. Spidermaster mind, Cyberdemons. etc.

The House of Pain.

Mutates infantry to Damned. special case zombie, found in hell, that infects other infantry. I tested this. works nicely

Mt. Erebus-

The ability to build Maledict, and a Armageddeon Weather SW.

UAC units

--Alpha Unit.

Rapid Fire Plasma Tank. A sleek medium tank that launches volleys of high speed plasma.

--Bravo-

The Crusher. A giant APC that can crush the enemy units, as infantry inside and fire their weapons.

--Delta-

Ghostbuster Infantry-Teleports demons back into hell.

--Resistance- Cadre/ Technicals. scrapped up units.

Cadre are civilians that help out, they are armed with shotguns or chainsaws..

Unit List

Footsoldier-Rifle or shotgun

Marine-Assault Rifle/Grenade launcher

Trooper-Rocket

Commando-Chaingun

Sarge-Plasma gun/BFG

Medic-

Technician- repairs structures


Sentry Drone-A larger variant of the Mars city drones, five can be controlled via sentry post uplink, it can preform hit and run tactics. using its automated gun turret.

---Sentry Posts are automated turrets that offer control to drones, should it be destroyed the drones controlled by that turret will go offline.

Combot Drone-

A larger variant of the sentry drone, armored it uses an rpg launcher and is self powered unit that does not require a sentry post.

Exo-Armor.

Designed for protection on long hours out on the Martian Surface. The Exo Armor has been improved with greater mobility and strength. Its default weapon is a short ranged electrical charge, however a marine can fit inside and attached his current weapon for additonal firepower.

APC

Orginally used on Mars city to transport personal and equipment. It has been modified for combat. Infantry can mount their weapons on the automated turret.


Mauler Heavy Tank-
Designed by UAC, the Mauler is use to strike into enemy strongholds.Firing a HE shells and dense armor it can storm the battlefield without too much trouble and take on most of the enemies toughest minions.


MRLS

-Launches heat seeking missles that can penetrate enemy armor, however with the rise of airborn threats, a new rocket system is in place to combat even the strongest of the enemy's aerial units.


Plasma Artillery.

it is a long range support vehicle, In its mobile form is fires a short burst of plasma engery that will make quick of enemy armor,however when deployed it uses a tank sized BFG launcher for long ranged attacks leaving the target area devasted. although it is rate of fire and slowness make it vunerable to close ranged attacks.

Cadre are civilians that help out, they are armed with shotguns or chainsaws..

Expense is not only resources but time. Upping the time it takes to build, using the modifier, will put you in a position that you have to choose between more infantry or more vehicles.

I thought of C&C: Hell on Earth because it pays tribute to both Doom and Command and Conquer. Showing a little respect to the makers.

Anyways people say that resources don't really fit into the game. Then this comment was made:

I thought to myself that could work. What if everyunit was free? The only real cost was the time it took to build it. If every unit was reasonable timed out it could have the same effect as cost. I would just have everything be like a dollar and the have the build time multiplier be whatever time I wanted it to be. That would in effect eliminate resources. Althoug to make everything work out properly everything would probably need to take MUCH longer to build than what we're used to, not the three seconds it takes for the conscript, we'll need like ten times what is used to be. Just throwing that out there. comments?

Yea, I read the Doom Bible, it was going to be more of an RPG kinda like game....not too different from the cell phone game.

The demons can earn a profit by killing. Certian units can 'steal' souls as a profit.

ore can be rubble/debris with corpses etc... either team can use it. like in D3 they converted martian dirt with the EnPro tech.

100 conscripts or 100 apocs? plus the veteran sys would get screwy.

we'd have to do alot immune=archvilemindcrtl to every other unit.