Citadel Walls are the last line of defense for an Epsilon proselyte. Cheap and quickly built, they serve as an early deterrence to infantry and light vehicles. They are also essential for protecting vulnerable structures against enemy infiltration or capture.

Automatic gates are used to keep enemies out while still allowing friendly units to pass by defenses. Great for keeping spies from getting into your base too easily, but don't rely on them too much.

Gatling Cannons are the primary defense emplacement of all Epsilon forces. A versatile and powerful rotary cannon capable of pumping out several thousand rounds a minute, it functions as both the main anti-infantry and anti-aircraft defense. Though this dual purpose gives it a major advantage over its Allied and Soviet counterparts, it requires power to operate, making an Epsilon base much more dependant on a constant power source to protect itself from enemies.

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Tank Bunkers are structures, which most turreted vehicles can enter to gain additional protection from enemy fire while still being able to retaliate. Though the occupier of a Bunker will become a much more difficult target to destroy for ground forces, aerial attacks will still easily bypass these entrenchments. Tank Bunkers built nearby a Synthesis Vault can get their armor reinforced with supplemental active field coming from the Vault. A similar effect will apply temporarily to those deployed through the Quick Fort.

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Inferno Towers are complex defenses which utilize the pyrokinetic techniques of Epsilon to punch through armored forces and instantly dismember infantry. The exact technology behind the weapon is kept in secret by Epsilon, however the effects of it are obvious.

Additionally, unlike Tesla Coils or standard Prism Towers, the Inferno Tower is capable of hitting a number of units at once in a small radius. The effectiveness of an Inferno Tower can be increased further temporarily with the use of the Psychic Flash support power, which is accessed from the Pandora Hub.

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Another interesting technology Yuri took with him when he defected: the Epsilon developed the Mind Reader to be used for espionage in the field, basing its design on the original Psychic Sensor. The device has the incredible capability of detecting and revealing the intentions of adversaries to move or attack within the range of the Reader. This allows Yuri's proselytes to see the approaching attacks or infiltrations coming from miles away and prepare themselves.

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The Chimera Core is one of Epsilon's most groundbreaking inventions in terms of stealth and obfuscation of their activity. Using a combination of powerful mental feedback and optical illusions, they can create an effect of vehicles and infantry not existing at their actual position.

Unfortunately, the Chimera Core is not powerful enough to cloak buildings, as the energy demand would become utterly impossible to fulfill for the larger Epsilon bases. If you do not have sensor units on hand, the Chimera Core should be your first target the moment you spot one.

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Epsilon's top-tier defense system, the Antares Battery, uses a much more intense version of the Inferno Tower's weapon. Using the most advanced pyrokinetic techniques and an increased energy supply, the Antares can unleash all of its concentrated power to annihilate groups of units at once. Its construction prevents close-range fire, making it an Achilles heel in its design. To compensate, the Antares can also make use of the Psychic Flash to temporarily fire more powerful beams at longer ranges.

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This structure is unique to PsiCorps.
The Psychic Tower is feared by Yuri's enemies. It is the pinnacle of his PsiCorps' mind control technology as while it can control multiple targets just like the Mastermind, it does not share its weakness in the form of willing to control more than it is capable of. Its mind control apparatus does not overload and will not result in a sudden self-destruction.

Once the Psychic Tower captures 3 objects, that's it, no more will be mind-controlled, until they are killed or the tower itself is disabled through some means, like low power or hacking. This has led to Allies and Soviets attempting to sacrifice the most expendable of their troops in order to render a Psychic Tower useless or sabotage the base's power before they attack.

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This structure is unique to Epsilon Headquarters.
It is said the snows of the Antarctic are full of these. The Genomines are dangerous contraptions hidden deep underground with their presence additionally hidden, with the use of Yuri's psychic illusion tricks. Whenever an infantry battalion approaches one of those, the Genomine explodes violently releasing large amounts of deadly strain of Yuri's Terranova viral compound, which causes rapid mutation of humans and turns them into Brutes, loyal to the owner of the Genomine that made them.

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At first glance, this building is not much different from Epsilon's regular Ore Refinery, but the fact is that the War Rig, known as "the Epsilon's Swiss Army Knife", serves more than just providing an ore unloading point. It can provide repair services for the surrounding vehicles, just like the Soviet Repair Crane. The building's top is equipped with an Amnesia Ray, same as the Ruiner's, to deprive the attack capability of enemy soldiers who approach it. Moreover, the same active energy emitters as those in the Synthesis Vault are contained inside the Rig, to reinforce any nearby Tank Bunkers.

On top of all that, numerous drills from the War Rig will be launched towards enemy positions and emerge from underground to cause heavy damage when the enemy vehicles are passing by. The drills are also relatively effective against structures, meaning the Rig can be used for direct assault as a last resort.

Probably the most terrifying detail of this construction is, that the War Rig with all its utilities can still be packed into a vehicle state, so that it can be deployed in different ore zones to provide unloading services there. War Rig in its mobile form has the ability to move underground and can smash anything in its way with the drills that are visibly mounted on its front in this mode, rather than hidden underground.

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