My updated
Pyro tips:
A sweet little combo that I use against the lighter classes is a quick stream of flames, Compression Blast (only Flamethrower), quick switch to shotty and blast 2-3 times, that usually kills many classes. Doing this move will A) mess up their aim B) give you time to get some room, C) push Spies away from targets, D) look cool. So that's LeftClick > RightClick > Q > Leftclick x2-3. If that doesn't kill them, the afterburn will. When it comes to a Heavy, I do the same, but AS SOON as he spins up, I jump. Why? This will push me back when he fires, lessening the damage HE does, and gives you a chance to escape with his health ticking away. But about 60% of the time you will die if your too close, so be wary of that.
If you have the Flamethrower, stop what you're doing and push ubers that could wreck your defense. Don't worry about killing that one enemy, just push that Ubered-Pyro/Demo away, or even push his Medic. That gives your Sentries some nice room to knock them back further. And make sure to A) push stickies away from the Cart/CP's. This will help tons. You can also "juggle" folks in the air or push them infront of friendly Sentries. It's always fun to do that, but watch your ammo.
The Airblast can reflect every OTHER rocket, so time it right. The reflection area has plenty of reach, so you could still reflect plenty of rockets without getting in front of them. And make sure to always aim your cursor where you want the rocket to go. The rocket could come above you to your right, but you could shoot it back behind the soldier at his medic's feet, dealing some decent damage. Grenades from the Demo's primary are a bit trickier, so aim higher so it lobs it back. Stickies are 50-50 when in tthe air, so worry about pushing them on the ground. You can also reflect Flare gun shots and Sentry gun shots.
Use the Axt sparingly. It's very awesome, but you'll end up dieing
a lot if you're not careful.
Heavy:
When you have that delicious Sandvich, you can hear the funny taunts by doing this--
Press G to taunt.
Immediately open your voice commands and say something. (Like Z+2 for "Thanks")
When done right, you'll here him talk to the Sandvich after he eats it. o_o
Soldier:
When firing, it's usually good to jump before you do. This will angle your rockets better at their feet, increasing your damage. Plus if you're facing off against another Soldier/Demo, you could propel yourself in the direction you want to go, throwing them off.
If you're past setup time, help build ubers for your medic by firing at walls next to you. But don't stand around doing it, make sure to be on the move. And save some ammo for later!