Navy Seals

God mode:
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "autoexec.cfg" file in the game folder. Change the "PlayerTakeDamage 1" entry to "PlayerTakeDamage 0".

Fly:
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "autoexec.cfg" file in the game folder. Change the "PlayerClip 1" entry to "PlayerClip 0". If you point up and walk, you will go into the sky. You can float there, shoot, and do everything as you would on the ground. You can also go through walls and the ground.
Information in this section was contributed by Steve Valdez.

Invincible enemies:
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "autoexec.cfg" file in the game folder. Change the "AITakeDamage 1" entry to "AITakeDamage 0".

Enemies take more damage:
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "autoexec.cfg" file in the game folder. Change the "AITakeDamage 1" entry to "AITakeDamage 99".

Full health:
In Bosnia or North Korea, you have the M4 M2O3 grenade launcher. If you are running out of health, shoot a grenade at a wall (not a terrorist) and it should bring you to 100% health. Note: Shoot only one grenade or you will take damage.
Information in this section was contributed by Joel Burns.