Press the [SHIFT] and the [@] key or the [~] key (on some systems) to make the console window appear. Then type any of the following codes: 
Code - Effect 

SISSY - Enable Cheats 
Alamode - God Mode 
PackNHeat A- dd Destructive Weapons 
PayLoad - Add Ammo 
IAmSoLame - All Weapons, Ammo, Invisibility 
PiggyTreats - Lots of Doughnuts 
JewsForJesus - Lots of Cash 
BoyAndHisDog - Lots of Dog Treats 
Jones - Lots of Health Pipes 
SwimWithFishes - All Radar Related Items 
FireInYourHole - Rocket Cameras 
IAmTheOne - Lots of Catnip 
LotsAPussy - Lots of Cats 
BlockMyAss - Body Armor 
SmackDatAss - Gimp Suit 
IAmTheLaw - Cop Clothes 
Healthful - Full Health & 4 Medkits 
Whatchutalkinbout - Bystanders Into Gary Coleman 
Osama - Bystanders Into Fanatics 
RockinCats - Cats on Guns 
DokkinCats - Removes Cat Repeating Guns 
IFeelFree - No Clipping Mode 
LikeABirdy - Fly Mode 
Slowmo # - Set Speed to #
 
God mode
 alamode
 
All destructive weapons
 packnheat 
 
Extra ammunition for current weapons
 payload 
 
All weapons, maximum ammunition, invincibility 
 iamsolame
 
Extra doughnuts
 piggytreats 
 
Extra money
 jewsforjesus 
 
Extra dog treats
 boyandhisdog 
 
Extra catnip
 iamtheone 
 
Extra cats (for silencers)
 lotsapussy 
 
Extra health pipes
 jones 
 
All radar-related items
 swimwithfishes 
 
Rocket cameras
 fireinyourhole 
 
Body armor
 blockmyass 
 
Gimp suit
 smackdatass 
 
Police uniform
 iamthelaw 
 
Full health and 4 medkits
 healthful 
 
Gary Coleman NPC bystander pawns
 whatchutalkinbout 
 
Fanatic NPC bystander pawns
 oasma 
 
Guns that use cat silencers now shoot cats
 rockincats
 
Disable cat shooting guns
 dokkincats 
 
Toggle ghost mode
 ifeelfree 
 
Toggle flight mode
 likeabirdy 
 
Set errand complete, turns on hate player groups 
 exec function SetThisErrandComplete() 
 
Set all of indicated day's errands complete, turns on hate player groups 
 function SetThisDaysErrandsComplete() 
 
Set all of today's errands as complete, turns on hate player groups 
 SetTodaysErrandsComplete()
 
Reset all errands, make hate groups not hate anymore 
 SetAllErrandsUnComplete()
 
Set all errands complete, turns on hat player groups 
 SetAllErrandsComplete()
 
Set the day, all errands before that day completed 
 SetDay() 
 
Set the day, reload level for that day
 WarpToDay()
 
Map select
 Goto() 
 
Change player to opposite morality
 ChangeDude() 
 
Reset police and wanted status
 ResetCops() 
 
Unknown
 fly
 
Unknown
 walk
 
Speed
 slowmo  
 

For testing, set this unique errand complete
Turns on hate-player-groups too

exec function SetThisErrandComplete(String UniqueName)


For testing, set all of the specified day's errands as complete
Turns on hate-player-groups too

function SetThisDaysErrandsComplete(int DayI)



For testing, set all of today's errands as complete
Turns on hate-player-groups too

SetTodaysErrandsComplete()


For testing, reset all the errands and make hate groups not hate you anymore

Warning!!
May not work for 'write-in' errands!


SetAllErrandsUnComplete()

For testing, set all errands as complete
Turns on hate-player-groups too--Apocalypse!


SetAllErrandsComplete()

For testing, set the day you want to warp to. All errands before that day
will be completed, along with anything you're supposed to retain

SetDay(int day)

For testing, set the day you want to test and the current level will be
"reloaded" for that day.

WarpToDay(int day)

For testing, go to the specified map. This should ALWAYS be used instead
of unreal's built-in "open" command.

Goto(String LevelName)

Change player to opposite of his current morality

ChangeDude()

For testing, reset cops so you aren't wanted any more

ResetCops()