Various Cheats:
Press ~ to get the console then put in a code below

aiprotectprotectee 1 - Invincibility for Protectee (Replace 1 with 2,3,4 etc for that agent)

aigodmode 1 - Invincibility (Replace 1 with 2,3,4 etc for that agent)

URSOKOOL - All weapons

noclip 1 - Fly mode (Replace 1 with 2,3,4 etc for that agent)

god 1 - Invincibility (Set to 0 for off)

aidisableears 1 - Toggle AI hearing (Set to 0 for off)

aidisableeyes 1 - Toggle AI vision, enemies can't see you (Set to 0 for off)