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Half-Life Hints
C4 Satchel
The C4 satchel is a controlled explosive. You can carry 5 of them at once. Satchels detonate by a remote control that you carry. You first drop a satchel, which brings up the remote control. Click again to detonate the satchel. You can also set up a series of satchels by pressing the secondary attack key after tossing the first satchel. Pressing the detonator then will blow up all the ones you threw at once.
The C4 satchel is a very cool trap. It is very powerful. The satchel will remain dormant until you detonate it, no matter what. It can't be blown up by bullets or other explosives. Also, you don't have to have a direct line of sight in order to detonate it. You could, for example, drop one on an elevator, send the elevator up, and then detonate it to take care of whatever might be waiting at the top.
