This subject is related to the Combine era.

Tripmine (Half-Life: Alyx)

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This subject is related to the Combine era.

For other uses, see Mine (disambiguation).

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The Combine Laser Tripmine is an area denial weapon first featured in Half-Life: Alyx.


Tripmines are used to prevent unwanted access to certain areas as traps. They are ovoid in shape, and much like the Hopper mine, they feature three mechanical “claws” that are used to securely attach themselves to a surface. Like the Half-Life laser trip mine, they will project a straight blue laser when armed. If anything crosses the laser, the mine will instantly detonate. They can deal heavy damage to Alyx should she stand too close when they explode, however they can be defeated either through Hacking or by throwing any kind of object into their laser from a safe distance. These tripmines use either an internal source or the electrical wiring on the surface they are attached to for power.

Alyx Vance can hack these mines to disarm them using her Multi-tool by guiding a small blue sphere through a series of hoops, while trying to do so faster than small red spheres which, if it catches up with the blue sphere, will fail the hacking attempt. On hard difficulty, a failed hack attempt will result in the mine exploding.

Behind the scenes[edit]

In Alyx, tripmines originally had two versions, a pre-placed version (such as the kind seen in-game), and a version that Alyx could carry and place herself. However, the latter version was cut, most likely due to the fact that most areas in the game are too cramped to effectively use tripmines, and Alyx would end up hurting herself.

Several of these tripmines are used in a room filled with explosive barrels, as a reference to a similar situation in the Half-Life chapter Surface Tension, where Gordon must carefully make his way through a large warehouse full of explosive materials and HECU tripmines, risking setting off an explosive chain reaction. This is further evidenced by the name of the achievement the player gets if they defuse all of the tripmines in the room.

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.


List of appearances[edit]