Press Tab to open the console then enter the following codes:

Code - Effect

manunited - Gain $5,000
richardnice - Gain 1,000 Victory Points
stefanrehn - Invincibility
killerik - Kill Hertig Erik
killstig - Kill Hertig Stig
killvaldemar - Kill Hertig Valdemar
killbirger - Kill Konung Birger
millmenved - Kill Menved
aik - Lose $5,000
richardbad - Lose 1,000 Victory Points
burp - No events triggered
svensk - No war declared
utopia - Rebels defeated
dimmuborgir - View all buildings
killhaakon - Win game