Select any region, all weapons, unlimited money:
Enter TO THE TOP as a company name.

$100 million:
Enter ROB A BANK as a company name, then return to the prompt and enter the company name of your choice.

Select any region:
Enter NUK THEM as a company name.

Faster research time:
Enter WATCH THE CLOCK as a company name.

Free reload:
Save the game after completing a mission. Quit the current game and reload the saved game to resume will all weapons fully loaded. REMEMBER: This will reset any research that is in progress.