Press '~' key to bring down the console.
Type /cmdlist to show all commands.
/name to change your player name. You can change the color of individual characters using the ^# (where # is 1-9) command as follows:

1 Red
2 Green
3 Yellow
4 Blue
5 Light Blue
6 Pink
7 White
8 Black
9 Red

/reconnect
Reconnect to last server.

/kill
Suicide.

/quit
Exit.

/serverinfo
Shows current server settings.

/toggle r_fullscreen
Will toggle between windowed and full screen mode. You must restart the game each time it's changed.

/toggle cg_drawcompass
Toggles the compass on or off.

/toggle cg_draw2d
Toggle HUD on-off.

/toggle cg_drawfps
Show or hide FPS.

/cg_FOV
Change Field of View. Experiment with as desired.

/toggle cg_drawtimer
Show time left.

/toggle cg_gibs
Toggle gibs.

/toggle cg_drawteamoverlay
Toggle team overlays.

Server Admin Commands:

/map restart
Reset map.

/sv_maxclients ##
Set the max number of players that can connect.

/timelimit ##
Set time limit to ## minutes.

/kick player_name
Kicks the player from the server.

/g_friendlyFire #
Sets friendly fire to either off 0 or on 1.

/g_forcebalance
Force even teams.

/g_warmup ##
Set warm up time to ## secs.

/g_gravity ###
Sets gravity to ###. Lower = less gravity.

/g_speed ###
Sets movement to ###. Lower = slower.

Create a shortcut on your desk top. Right click it and select properties, then change the "target" line by adding the following:
+ set sv_cheats 1
Click OK, then start the game using the desktop shortcut. When in the Game press the tilde key (~) and you can enter the following cheats:

/god
God Mode

/notarget
Enemies will not fire at you

/noclip
Walk Thru Walls

/give all
All Weapons

/give armor
Give Armor

/give health
Give Health

/give stamina
Give Stamina

/nofatigue
Unlimited Stamina

/cg_uselessnostalgia 1
Original Wolfenstein Interface

/kill
Suicide

Enable codes with shortcut modification: + set sv_cheats 1
Go to console (~ key)
Use the command: /spdevmap "mapname" (without quotes)
(When you jump to a map you must use cheats to give yourself weapons because you start the map with none.)

Mapnames:
escape1
escape2
tram
village1
village2
crypt1
crypt2
church
boss1
forest
rocket
dam
chateau
dark
dig
castle
end
beach
village
boss2
rocket
baseout
assault
factory
trainyard
norway
xlabs
wine
wine2
wine3