Half-Life: Team Fortress Classic Cheats

Change your class to a scout. Go in the console, type "+reload", then go underwater in any level. Go in the console and type "kill". Wait for someone to get your pack, then you will be a zombie. To respawn again, go in the console and type "-reload".

While in Team Fortress Classic, become a spy. Press
[Ctrl] to crouch. Press [Right Click] (special ability)
and select "Feign". If done correctly, you will have
feigned like normal, but instead of being on the surface, you
are now under it and are not visible by any other players. Once
you want to get out of this position, just stop "Feign".
Note: This is a good trick to do in an enemy's base, as you are
able to communicate with your team. This is also a good time to
change disguises, while no one can see you.
Strategy: Part 1: by James Spairana
Strategy: Part 2: by James Spairana
Strategy: by Matt Beisser

One of the most important tips I can give: know the levels. Also, learn how to score in them. It never ceases to amaze me how many people take the key to the wrong place in the Rock or how many players don''t know where the control room is in Havoc. Do your teammates a favor and read the DOCs. Or at the very least, don''t pick up keys/flags if you don''t know where they go. There''s nothing more irritating than watching a teammate in the Rock bring the key to YOUR base. It''s also important to know where the choke points and Sniper / Sentry hideouts are. If you know where to expect the enemy, you''ll probably find a way to surprise THEM instead of vice versa. Also, I''ve found it much easier to bounce grenades into areas with Sentries, rather than attack one head on. :)

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.