The Infected
Hl2 2016-11-05 14-26-54-549


  • A.R.C. (formerly)
  • The City (formerly)


Infected Personnel/Civilians

The Infected are human beings infected with an unknown virus. Infected personnel ranging from security guards, Inmates, workers and civilians, and is the most common enemy seen in Underhell.


Infected are humans who have been affected by an unknown disease. The carriers start displaying necrosis and rot alive, described as appearing to have been "cooked" from the inside. They also start to show severe aggressive behavior, as well as a lack of cognitive and fine motor skills.

Infected are observed functioning in combat while missing both arms, but severing legs or decapitating them will prove effective in dispatching them. They are quite resilient to attacks directed at their torso. 

Infected, armored or otherwise, are capable of climbing pipes and ladders as well as leaping down from high places. They may also jump rather long distances to quickly navigate the environment. Infected can also be seen throwing objects to hit the player when they are out of range.

Infected are incapable of opening manual doors, due to their lack of fine motor skills. When an Infected comes up to a door, they will bang on it continuously until it breaks open. This is a useful tactic when being pursued by Infected, as it can slow them down, giving the player a chance to find a hiding spot.

Infected often display a horde mentality. If the player fires their gun too much or generally makes too much noise, a horde will be drawn to them until they kill most of the horde or hide until the horde disperses. An audio cue will indicate an approaching horde, and dynamic horde music displays the intensity of the horde. 

The Infected emit rather inhuman shrieks and growls, more closely resembling that of an animal. Infected security guards and workers often wear helmets, with the helmets of some security guards having a visor which will resist multiple bullets before popping off, but the visor may also be flipped up which allows for headshots from the front. Some infected are equipped with shoulder flashlights, which can assist the player in determining their line of sight which proves useful when attempting to sneak past an infected. Various infected may also carry melee weapons of all kinds. 

The Infected are also weakened in sunlight and seem to be unable to fight if exposed to it. It is unknown if daylight will serve as a gameplay element in Chapter 2.


  • In the Prologue, there is a corpse of an Infected civilian inside of the U.D.R.C. gas chamber. This is the first appearance of the Infected in the game.

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