The rocket launcher s primary fire shoots up to six rockets in spread formation. The secondary fire shoots up to six grenades out, which can be used to shoot around corners and down passageways. Both modes of fire do variable damage, but are capable of killing in one shot. If you can keep the crosshairs on a relatively close enemy for more than a second, they ll turn red, indicating you have a missile lock. Firing while the crosshairs are red shoots a heat-seeking missile.
Missile locks become much more effective underwater and in low gravity levels.
Also, if you load up rockets, then hold secondary fire while loading, and then release primary fire while still holding secondary fire, the rockets will shoot out in a tight group rather than a spread. You can thus deal a HUGE amount of damage to a small area this way. The sniper rifle s primary fire is a large bullet. The secondary fire causes the screen to zoom in, allowing pinpoint accuracy even at long distances. Hitting someone in the head with a rifle round almost always results in instant decapitation.