To activate cheat codes in the PC version of Freedom Fighters, simply type them directly into the middle of gameplay.

Codes:
Type in the following during the middle of gameplay:

• IOIGOD - God Mode
  
• IOIFLYMO - Flymo Ragdolls
  
• IOICHARISMA - Charisma
  
• IOIAMMO - Unlimited Ammo
  
• IOIBLIND - Invisibility
  
• IOIFASTMO - Fast motion
  
• IOISLOWMO - Slow motion
  
• IOISHOTGUN - Shotgun
  
• IOIROCKET - Rocket launcher
  
• IOIHGUN - Hgun
  
• IOISNIPER - Sniper rifle
  
• IOIRIFLE - Rifle
  
• IOINAILGUN - Nailgun effect
  
• god 1 - God mode
  
• giveall - All weapons
  
• infammo - Infinite ammunition

Just in case if the cheats if the cheats were not working. (most of the cases normal method will work)

To enable the Freedom Fighters cheats, you first need to modify the "freedom.ini" file in the game folder or \%AppData%\Roaming\IO Interactive\Freedom Fighters (create a backup copy of the file before proceeding). Open the file using Notepad and add the following line:

EnableConsole 1

Then, while in the game press [~] to display the console window and enter one of the following codes to activate the corresponding cheat function:

Unlock Liberty Island
To unlock the extra stage, Liberty Island, just beat the game on third or fourth difficulty.

Disable Intro Movie
In the freedom.ini file, change the line DefaultScene=FF-Intro.gms to read DefaultScene=FF-Startup.gms. This will skip the intro scene and go directly to the game menu.

Credits:fandom

https://steamproxy.net/sharedfiles/filedetails/?id=3576290723