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Half-Life Hints
Laser Tripmine
The tripmine is basically a trap. You can carry up to 5 tripmines at any given time. You can only set a tripmine when you are near the surface that you want to set the mine on.
The tripmine is especially useful for the smarter enemies like soldiers, assassins, alien slaves, and alien grunts. Any enemy that might chase or search for you will fall for your trap. Not to say other enemies will not, but ironically, the smarter the enemy, the more likely they will walk into a tripmine.
You might also want to use tripmines as controlled explosives. For example, set a few tripmines on a large metal door that needs to be blown open. Move far away and target one of them. Shoot it out and all of the tripmines should detonate, creating a massive explosion.
