This subject is related to the Combine era.

Suppression Device

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This subject is related to the Combine era.

This article is about the weapon located atop the Overwatch Nexus. For the anti-reproduction field, see suppression field.

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Combine mortar.jpg
Suppression Device
Production information






Technical specifications

Very high, instant kill if within a certain blast radius

Ammo type

Dark Energy

Rate of fire



Depends on the speed of the target

"The Overwatch Nexus is the main source of pain for this part of town, thanks to a huge suppression device that's raining down hell from the roof of that place."
Barney Calhoun[src]

The Suppression Device, also referred to as the Suppressor, is a stationary Combine weapon that functions much like a large mortar, except that instead of firing shells it fires an extremely powerful and concentrated Dark Energy pulse beam.


The Suppression Device fires its energy projectile in a nearly vertical trajectory. When its beam hits the ground, it would disintegrate any objects and living beings within a 3–5 meter (9–15 feet) radius. Before the beam could be fired, however, the Suppression Device needs to "warm up" for a short period of time, during which the ground where the beam will land begins to glow yellow-blue, allowing the next target of the beam to be ascertained and thus avoided. The device also leads its shots to ensure better accuracy, which means firing directly on the spot that the target will be at their current speed.

The Suppression Device is powered by a series of Combine Generators and possibly forms its ammunition from them as well. During the Uprising in Half-Life 2, Gordon, Barney, and a small band of Resistance fighters are required to disable all the generators in the Overwatch Nexus in order to power down a Suppression Device installed on its roof so that the Resistance on the streets can move more freely. This is the Suppression Device's sole appearance in the series.

It is unknown whether the Suppression Device operates automatically.

Related Achievements[edit]

Half-Life 2
Hl2 beat supressiondevice.png Fight the Power (10G)
Shut down the suppression device by disabling its generators.


  • Certain pulse beam launches are scripted to target specific spots in the map, and in some cases are accompanied by a brief, blueish screen flash upon impact - an effect otherwise not occurring with regular, unscripted launches.
  • Upon approaching the Overwatch Nexus' main entrance, Rebel companions present in the player's squad might occasionally aim and shoot at the Suppression Device despite it being indestructible, however Barney won't.




List of appearances[edit]