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The Apocalypse laboratory is the near future equipment research office in the prison.
The building gets the number of research points by reading all the designers and mysterious drawings to develop a series of near future weapons.
In addition to unlocking the building, the DLC will unlock 4 near future weapons and 4 near future armor.
They are Alfa experimental Combat Rifle, Beta experimental operation pulse gun, Electromagnetic track sniper gun, Delta experimental electromagnetic firing gun, X-1 multifunction helmet, executioner helmet, special combat vest, and Apocalypse spectacles.

The building just can be built in the Empire mode. The DLC can be installed independently without "Apocalypse Project".

The Story mode will have a low chance of dropping the above mentioned weapons in the safe banks of major difficulty banks.