To get any weapon you want, first the server must type in: "sv-cheats 1" then, in battle go to the console (~) and type: "give tf_weapon_???" replace the ??? with weapon you want:
pipe bomb launcher=pl
note: if you have trouble getting a weapon, find what it says when a person gets killed with it
Host your own game and make sure your console command window is set as the button ~, press it and a window will come down, type in sv_gravity ***, fill in the *** with as many numbers as you want, the normal gravity is 600 -700. have fun.
Join a game that has a level with a stationary machine game(total war). join the game as a sniper walk up to the gun with your sniper gun out, gain control of the machine gun and just sniper in, your accurracy will be a lot better with this.