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Half-Life Hints
Rocket-Propelled Grenade Launcher (RPG)
The RPG works only with single rockets at a time, +5 rockets max. It cannot be used underwater.
The RPG is probably the coolest and the most powerful weapon in Half-Life. It has two modes that you can switch between by hitting the secondary fire key. The first is a straightforward (dumb-fire) launch of a rocket-propelled grenade. Aim and fire, and no matter where your sights move to, the rocket will hit its original target.
The other fire mode is a laser-guided launch, where a laser directs the targeting of the rocket even after it's been launched. Hence, if you target a moving enemy, fire and track the laser sight along the path of the enemy so that the rocket intercepts him when it gets within range. Be careful of firing a rocket at something close to you; the explosions can do severe damage. It's because of this and the scarcity of rocket ammo that you should save all of your rockets for big targets like military helicoptors and tanks.
