Gravity:
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.

Get any Weapon:
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:

auto cannon=ac
rocket launcher=rl
gerande launcher=gl
pipe bomb launcher=pl
wrench=spammer
knife=knife
tranquilizer gun=tranq
chain gun=ac
rocket Launcher=rpg
medkit=medikit
super shotgun=supershotgun
flamethrower= flamethrower
railgun=railgun

note: if you have trouble getting a weapon, find what it says when a person gets killed with it

Heavy Power Sniper:
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.

Various Cheats:
After you got the console working, here are some cheats you can type in:

1)sv_friction-makes it how fast you go on the ground. You must activate the sv_cheats 1 first.

2)Changelevel ??-to change the level you are on if it is your own server. Fill the ?? with the name of the level.

3)mp_allowmonsters-If you are doing a level from another mod, or trying to see the monsters, this will activate them, but you must restart the level after you type it in.