During the game press [~] to open the console. Here type in

help

and all commands are listed. Most of the codes need an activation
parameter, which mostly is 1 for ON and 0 for OFF. For example:

g_always_run 1

activates the permanent running and

g_always_run 0

turns that effect off again.

Bonus codes
Get to your main install directory, run file called setup-bp.exe,
choose your install language, enter these BONUS UNLOCKER CODES:

pseudodog: Unlock code #1
snork: Unlock code #2

Press NEXT button and you got the BONUS content unlocked.

Password Effect
pseudodog Multiplayer map Pool, UK and US military
multiplayer skins.
snork Multiplayer map Dark Valley, French and German
military multiplayer skins.