This subject is related to the Combine era.


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This subject is related to the Combine era.

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Alyx tool.jpg
HLA Multitool.jpg
General information




Used by
Game information

item_hlvr_multitool (HL:A)

"It's a tool with multiple functions. So, you know—multi-tool."
Alyx Vance[src]

The Multi-tool, nicknamed the "Alyx", is Alyx Vance's electrical tool in Half-Life: Alyx. Its later model is the EMP Tool[1], an electromagnetic pulse[2] device used by Alyx during the events of Half-Life 2 and its episodes.


Half-Life 2[edit]

In Half-Life 2, the Multi-tool is further modified into the EMP device. It now houses a retractable claw-like protrusion in the rear casing that is able to emit an electric bolt to disable equipments. Alyx has it attached to her belt, and regularly uses the shock it channels to bypass Combine security systems or open locked doors. In Episode One, Alyx also uses it to re-program Rollermines to attack enemies, allowing Gordon and her to proceed further towards the Citadel Core. Due to the Combine's widespread use of technology in and around City 17, the device proves to be highly useful.

The tool can also be used to gain access to Combine interfaces along with the information in them, often providing the Resistance pivotal intelligence. It stores information much like a USB key, and can be simply plugged into computers to download or upload data. Alyx uses it to store Judith Mossman's message along with the encrypted files about the Borealis, which she delivers to Isaac Kleiner for analyzing at White Forest.

Mossman freeing Gordon from his Prisoner Pod with Alyx's EMP Tool in Breen's office.

At the end of Half-Life 2, Judith Mossman threatens Breen with the multi-tool, hinting that it can be used as a weapon against living beings. After scaring off Breen, Mossman uses it to free Gordon Freeman from his Combine Prisoner Pod.

Half-Life: Alyx[edit]

In Half-Life: Alyx, the early Multi-tool appears to be built from parts of a portable cassette recorder, and is used to gain unauthorized access to Combine equipments such as fabricators and lockers through hacking events, as well as to reroute the power in unseen wiring systems hidden in the walls of buildings. It can also be used to defuse Tripmines. At this time, the Multi-tool doesn't yet have the electric shock-emitting device, but rather uses an interface on its reverse side to couple with Combine outlets.

Alyx nicknames her Multi-tool the "Alyx", much like how Russell named his Gravity Gloves the "Russells". Russell himself expresses great admiration over Alyx's ability to invent the device, considering this achievement to be enough to guarantee her a job in his future plans of going into mass market production of his Gravity Gloves after the defeat and complete banishment of the Combine from the Earth.

Related Achievements[edit]

Half-Life: Alyx
Achievement Safe Trip.jpg Safe Trip
Use the multitool to hack a tripmine.
Achievement Blast From the Past.jpg Blast From the Past
Defuse a roomful of explosive barrels.
Achievement Triple Bypass.jpg Triple Bypass
Solve the tanker yard's electrical puzzle and escape.

Behind the scenes[edit]

The EMP Tool was never directly named in-game in Half-Life 2 or its Episodes. Instead, its name comes from its texture file, named emptool_sheet, and its model, named alyx_EmpTool_prop.

Before Episode One officially granted Alyx the ability to take control of Rollermines with her EMP Tool, the Half-Life 2 leak included references to a weapon called the Roller Wand that appeared to give the player and other characters the same ability, but is unused in the final game.

The Stungun, a melee weapon featured in Half-Life 2: Survivor, uses a recolored model of the EMP Tool.


Half-Life 2[edit]

Half-Life: Alyx[edit]

List of appearances[edit]

See also[edit]


Combine OverWiki has more images related to Multi-tool.
  1. Half-Life 2 game files, texture file names
  2. Half-Life 2 Prima Guide