Press ~ during game play to display the console
window. Then, one of the following case-sensitive codes to activate
the corresponding cheat function.

Code
Level skip lua levelend()
Full ammunition lua allammo()
Add weapons lua medave()
Add weapons lua medoof()
God mode lua god()
Disable God mode lua ungod()
Invisibility lua PlayerInvisible()
Disable invisibility lua PlayerVisible()
Set speed lua speed()
Toggle flight mode lua PTFly()
Low gore lua PTLowGoreVersion()
Empty weapon slots ua ResetWeaponSlots()
Spawn indicated weapon lua summon(PickupKnife)
Spawn indicated weapon lua summon(PickupColt)
Spawn indicated weapon lua summon(PickupSocom)
Spawn indicated weapon lua summon(PickupMac10)
Spawn indicated weapon lua summon(PickupPumpGun)
Spawn indicated weapon lua summon(PickupM16)
Spawn indicated weapon lua summon(PickupSniper)
Spawn indicated weapon lua summon(PickupGatlingGun)
Spawn indicated weapon lua summon(PickupFlamer)
Spawn indicated weapon lua summon(PickupJackhammer)
Spawn indicated weapon lua summon(PickupUdderGun)
Spawn indicated weapon lua summon(PickupA_Gun)
Spawn indicated weapon lua summon(PickupIonRifle)
Spawn indicated weapon lua summon(PickupPitBull)
Spawn indicated weapon lua summon(PickupSpectreEyes)