List of enemies in Half-Life 2

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Half-Life 2 and its episodic sequels, include computer-controlled (AI) opponents that fight against the player and his/her allies (which are also controlled by the computer). This page is designed to be a complete catalog of all enemy characters encountered in the games as well as to include brief descriptions and links to articles that contain more information.

Contents

[edit] The Combine

The Combine is a powerful alien race, that expands its empire by conquering other worlds, using their resources, and exploiting their species as it sees fit.

The full article on The Combine can be found here.

[edit] Humanoid Combine

Humanoid Combine refers to humans that are now a part of the Combine forces on Earth (The Overwatch).

[edit] Civil Protection

The Civil Protection unit is made up of humans that willingly join the Combine. Unlike Combine soldiers, they are not biologically altered. Civil Protection police City 17 and keep citizens in-line. They will typically carry stunsticks while on duty, but can be armed with H&K USP Match pistols or H&K MP7 PDW sub-machine guns should the situation require them to. They are considerably weak.

More information can be found here.

[edit] Combine Soldier

Combine soldiers are humans that have been altered and enhanced by having mechanical implants surgically attached to them. They are the primary infantry force of the Combine, and can be found anywhere the Combine needs them. They work in squads, and can carry H&K MP7 PDW sub-machine guns, SPAS12 shotguns, pulse rifles, and will usually carry grenades as well.

More information can be found here.

[edit] Combine Nova Prospekt Guard

These are identical to regular Combine soldiers, apart from their uniforms; they are unique to Nova Prospekt and work there as a security force.

More information can be found here.

[edit] Combine Sniper

While not actually seen, snipers hide themselves in buildings and use a powerful Combine sniper rifle to kill anything they consider to be hostile. The only evidence of a sniper's presence is the blue sighting-beam projected from their rifle. The only way to kill a sniper is to throw an explosive into his hideout, or to shoot an RPG into the window. In Episode One, however, an allied rollermine is propelled into the window, achieving the same effect (this is a one off, though).

More information can be found here.

[edit] Combine Elite

The Combine Elite is a more powerful version of the standard Combine soldier. They wear white uniforms, have more health, better accuracy, and inflict more damage. They always carry pulse rifles and are armed with energy orbs.

More information can be found here.

[edit] Stalker

Stalkers are humans that have been brutally butchered and altered by the Combine. They do slave labour in the Citadel, such as operating panels or repairing damaged technology. They are never encountered in a combat situation during Half Life 2, though they are occasionally fought in Half-Life 2 Episode One. They are equipped with a weak laser, projected from the apparatus on their heads, which they use as a makeshift weapon.

More information can be found here.

[edit] Combine Synth

Synths were organic, robot-like creatures that The Combine previously enslaved and altered. The Combine has brought some of them to Earth.

[edit] Gunship

Gunships are flying Synth units equipped with highly accurate pulse turrets. They can only be damaged by explosives or energy orbs.

More information can be found here.

[edit] Dropship

Dropships are used to transport Combine soldiers (in troop carriers - which come with mounted turrets), APCs or Striders. The Synth itself has no weapons and is not hostile. It can be destroyed with repeated blasts from a rocket launcher.

More information can be found here.

[edit] Strider

A large tripod Synth equipped with a powerful, highly accurate pulse turret and a destructive singularity cannon. Striders can only be damaged by explosives.

More information can be found here.

[edit] Shield Scanner

The shield scanner, unlike the city scanner, has minor combat roles. A shield scanner uses its pincer arm to efficiently pick up and deploy hopper mines, giving it the additional combat support roles of a miniature equipment transport and minelayer. Shield scanners are also used as target-spotters for striders, alerting them to the presence of enemies hiding inside structures, or in other areas that might be used for concealment. The official Prima game guide says that this type of scanner is equipped with a light machine gun. However, this feature was most likely cut from Half-Life 2, as the shield scanner never uses such a weapon in-game.

More information can be found here.

[edit] Crab Synth

Seen briefly in The Citadel, but never encountered in a combat situation - its capabilities remain unknown.

More information can be found here.

[edit] Mortar Synth

Seen briefly in The Citadel, but never encountered in a combat situation - its capabilities remain unknown.

More information can be found here.

[edit] Combine Technology

The Combine has manufactured a large variety of technology, most of which is designed for combat. A large amount of The Combine's technology present on Earth is actually human technology re-interpreted and re-made by The Combine, using its own materials.

[edit] City Scanner

City Scanners are floating cameras that are deployed from The Citadel for monitoring purposes. They may drop a battery if destroyed. City Scanners can be grabbed with the gravity gun.

More information can be found here.

[edit] Manhack

Manhacks are weapons used by the Combine with the specific purpose of flushing out any targets that may be hiding in tight, confined areas. Manhacks have spinning blades with which they attempt to dissect hostiles. They can be grabbed with the gravity gun.

More information can be found here.

[edit] Rollermine

Rollermines bury themselves and become activated when a hostile target passes near them. They can jump onto and attach themselves to vehicles and cause damage. They can also inflict damage to living beings by emitting a powerful electrical charge into them upon contact. Rollermines are destroyed when submerged in water. They can be grabbed with the gravity gun. In Episode 1, Alyx Vance has the ability to reprogram them, creating a more powerful, but un-stable version that is allied to the player.

More information can be found here.

[edit] Hopper Mine

Hopper mines are anti-personnel mines placed by shield scanners. When they detect the presence of something they consider to be hostile, the mine will launch itself into air, and detonate upon impact with the ground. If picked up with the gravity gun, the mine can be reprogrammed to work against Combine forces

More information can be found here.

[edit] Sentry

Sentries are placed in important areas which the Combine have no personnel patrolling in. They have a 180-degree firing arc, and have to be toppled over in order to be disabled. Alyx can reprogram certain sentries to fire upon Combine forces. Sentries can be picked up with the gravity gun.

More information can be found here.

[edit] Ground Turret

These types of turrets are set in the ground, and will activate if their blue laser is disturbed. They will spring up and fire upon anything they consider hostile. Ground turrets are destroyed by placing an explosive device into their exposed interior once they are activated.

More information can be found here.

[edit] Ceiling Turret

Ceiling turrets are activated by red laser beams, and are a lot more powerful than ground turrets. They will tear anything to shreds within seconds, and there is no way to destroy them. Activating such turrets ensures certain death.

More information can be found here.

[edit] APC

The Combine Armored Personnel Carrier is equipped with an integrated rocket launcher and a pulse turret. It is used to transport and deploy Combine units, or as an extra support unit.

More information can be found here.

[edit] Hunter-Chopper

The Hunter-Chopper is highly mobile attack helicopter equipped with a Combine pulse turret, and is capable of dropping mines at targets below it. It can only take damage from powerful weapons similar to its own.

More information can be found here.

[edit] Headcrab Shell

Large shells launched by The Combine into areas containing large amounts of city escapees or resistance members. Once the shell impacts, fins will open at its rear and headcrabs will jump out. Shells can be filled with any type of headcrab.

More information can be found here.

[edit] Suppression Device

A large, mortar-like device which fires a highly concentrated pulse that disintegrates organic matter. It cannot be destroyed, only powered down by disabling its generators, which act as its power source.

More information can be found here.

[edit] Xen

Xen is the borderworld seen during Half-Life. Some of the creatures from Xen return in the sequel.

The full article on Xen can be found here.

[edit] Headcrabs and Zombies

Headcrabs attempt to gain control of a human's nervous system by infiltrating their brain, thus turning the "host" into a zombie. Two new types of headcrabs (and thus zombies) have appeared since Half-Life.

[edit] Headcrab

The standard headcrab. They move relatively slowly and will pounce when given the opportunity. They are best dodged then killed with the crowbar.

More information can be found here.

[edit] Zombie

The Zombie is slow moving, and will strike at anything that gets close to it that it doesn't like using razor-sharp claws. They can also hurl objects. Zombies are easily outsmarted, and can be taken care of with nothing more than the crowbar or shotgun blast to the head.

More information can be found here.

[edit] Fast Headcrab

Slightly smaller but much faster than regular headcrabs due to their long legs, fast headcrabs can be difficult to hit with projectiles due to their speed, and are best dodged and then killed with the crowbar.

More information can be found here.

[edit] Fast Zombie

The result of a fast headcrab taking control of a human's nervous system. The fast zombie runs on all fours like an animal, can move at high speeds, and jump long distances. They can cause a lot of damage. They will occasionally back off to growl, making this the best time to attack them with a high-powered weapon such as the shotgun or the revolver. They can also easily scale pipes and walls, meaning that height does not ensure safety from them. Fast zombies produce wolf-like howling both afar and upon close contact.

More information can be found here.

[edit] Poison Headcrab

Larger, and slightly faster-moving than regular headcrabs, a bite from a poison headcrabs will inject the player with neurotoxin, which will bring their health instantly down to 1, making the player highly vulnerable. Gordon's suit will then inject an anti-toxin - over several seconds, this will neutralize the poison and return the player's health to what it was when the player was bitten. Like other types of headcrabs, poison headcrabs are best dodged, and then attacked with the crowbar.you can recognize these type of headcrabs by their distinctive sound

More information can be found here.

[edit] Poison Zombie

A very large, and slow-moving zombie. It contains one poison headcrab controlling the nervous system, plus additional poison headcrabs riding on the host's shoulders and back. The poison zombie can throw poison headcrabs at the player. The poison zombie can sustain a lot of damage, and so firearms are a relatively inefficient weapon to employ against it -- the best way to handle a poison zombie is to set it on fire, and then retreat.

More information can be found here.

[edit] Zombine

Dubbed "Zombine" by Alyx, the Combine Zombie is one of the new enemies from Episode One. It has the appearance of a regular Combine Transhuman Soldier, with a normal Headcrab attached to its head. In terms of speed, it is halfway between a normal Zombie and a Fast Zombie. It dashes towards its target, limping, and will scratch with its elongated claws or pull out a grenade and attempt to use it as a club, with no knowledge that it will detonate.

More information can be found here.

[edit] Other Xen Creatures

The rest of the Xen creatures, seen in the game.

[edit] Barnacle

Barnacles are stationary alien creatures that attach themselves to ceilings and feed by catching prey with their sticky tongues. The player can put non-organic objects, such as crates or cinder blocks in the way of a barnacle's tongue. The barnacle will draw the objects up, and then spit it back towards the ground. This tactic can be used to get a barnacle's tongue out of the way. If the player gets caught by a barnacle, they can simply whack at it with the crowbar once it gets within reach. Perhaps the best tactic against barnacles is to attach an explosive barrel to its tongue and then shoot the barrel once it has been raised to a reasonable height. This can be also used to destroy large groups of barnacles with minimal use of ammunition.

More information can be found here.

[edit] Leech

Leeches are small, Xen creatures that have infested the Earth's oceans since the portal storms took place. They will rip anything that ventures too far from shore to shreds.

More information can be found here.

[edit] Ichthyosaur

Ichthyosaurs are large, Xenian predators resembling aquatic dinosaurs. Ichthyosaurs are never encountered in a combat situation during the game - and only one is ever seen, during the early stages of the game.

More information can be found here.

[edit] Antlion

Antlions are a species of alien that has infested Earth since Half-Life took place. It was originally thought that Antlions were a new species of their own, but Marc Laidlaw has confirmed that Antlions have come to Earth from Xen.

The full article on Antlions can be found here.

[edit] Antlion

Insect-like aliens who live underground on the coasts. They attack in swarms, and come to the surface if the sand is disturbed. They can be controlled with pheropods extracted from antlion guards.

More information can be found here.

[edit] Antlion Guard (Myrmidont)

Larger and much more powerful than regular antlions, antlion guards control regular antlions, and are very hard to kill. They can charge or hurl objects at the player. There are various ways to deal with antlion guards, but throwing large objects and explosives at them with the gravity gun is the most convenient way. A Vortigaunt extracts pheropods from an antlion guard during the game, which the player can then use to control antlions. These are hard to kill without the proper weaponry, such as rockets or greanades from the SMG. They are encountered three times during the game, once in Sandtraps, and twice in Nova Prospekt.

More information can be found here.