Sometimes, you have an opponent, structure, device or other target which you just got to Kill It with Fire. If you have to do this multiple times, you would wish you have an actual weapon which can burn things for you instead of rigging something on the spot all the time. You will need the Fire-Breathing Weapon; a gun-like weapon which creates fire. Pull the trigger and a gout of fire will appear, covering your target in burning goodness. Most games use a form of directional Splash Damage to implement this. Weapon of Choice for the Pyromaniac. Sometimes used for lighting cigarettes.