this is an explanation in an albeit small rudimentary way.
the flare gun.
how to obtain:achievement,drop,mann co store,trading.
ammo:16 flares
mechanics:the flare gun is a pyro secondary weapon that travels in a slight arc and after each shot you must reload before firing another shot.this weapon does not work underwater so use caution when using it on maps such as lakeside or well.it hit for critical hit damage when it hits a burning opponent.on hit it set opponents on fire.
taunt kill:hadouken a short range taunt kill that is pretty much instant kill.the pyro forms a stance then puts it's hands out and shoots a haduken in front of it's way.(the reason I say it is because VALVe never tells us which gender the pyro is)
recommendation:8/10 it's useful with weapons such as the degreaser,phlogistonator, or axestinguisher/postal pummeler, but there are other options.