Start game as usual, open up the console with ~ key and enter following
commands as desired. 0 instead of 1 disables the cheat and vice versa.
Entering the command without any values will show the value, it is
currently set to. Disable the console (press ~ again) to continue
playing the game.

god 1 - ENABLE GODMODE (default 0)
disable_ai 1 - ENEMIES WONT ATTACK (default 0)
noclip 1 - WALK THROUGH WALLS (default 0)
gravity 0 - NO GRAVITY (default 1)

Cheat Codes:
Enable the console by adding -console as a command-line shortcut to the game.

Unlock All Chapters:
Modify your [install directory]\ep2\cfg\config.cfg file (with Notepad) and change sv_unlockedchapters to "7".
Half-Life 2: Cheat mode
Start the game with the -console command line parameter. Press ~ during game play to display the console window. Enter sv_cheats 1 at the console to enable cheat modes. Then, enter one of the following codes to activate the corresponding cheat function.

Cheat Codes:
During gameplay Press Ctrl +  to bring up the in-game console (European players may need to press Ctrl + +). Type any of the following codes into the console.

Enable Console:
Before you can use the cheat codes you must first enable the console. This requires that you edit two files. First, locate the autoexec_a2.cfg file in your INSTALL FOLDER\Profiles folder. Open this file with Notepad and add the following line to the end of the file (in the // Startup section):

Cheat mode:
Press ~ during game play to display the console window. Type DebugMode 1 (case-sensitive) to enable cheat mode. Then enter one of the following case-sensitive codes at the console window to activate the corresponding cheat function. Note: For some international versions, hold [Shift] then quickly press ~ followed by ? to display the console window.

20 in all stats, new sword, cannot level - irolltwenties
Gain indicated amount of gold1 - dm_givegold [number]

Cheat Codes (DEMO):
Enab will start the demo with cheats enabled. When playing, drop down the dev-console and enter the following codes and hit ENTER to activate or toggle them.

All Weapon Upgrades:
Open the DefaultWeapon.ini located in the directory "C:\Program Files\Electronic Arts\Medal of Honor Airborne\UnrealEngine3\MOHAGame\Config" with Notepad.

Press Ctrl+F and enter "ExpPointsLevel1=" without the quotation marks. Now change the values for ExpPointsLevel1=, ExpPointsLevel2=, and ExpPointsLevel3= to 1, 2 and 3.

So instead of this:

ExpPointsLevel1=25
ExpPointsLevel2=50
ExpPointsLevel3=100

Unlock Boogey

5 Animal Templates

Entry Location:

Cheat: Secret Phone Numbers

Use any phone in the game and dial these numbers to unlock secret achievements.

• 555-1037
• 555-1847
• 555-1206
• 555-1233
• 555-2309
• 555-2349
• 555-2402
• 555-3243
• 555-3285
• 555-3840
• 555-3947
• 555-4372
• 555-4565

Hint - Erazor Djinn

Unlockable

Cheat List

 Select one of the five elemental symbols. There are then twelve symbols in this layout:

1 2 3 4 5 6
7 8 9 10 11 12

• Unlock all characters: Select Water and then select 12, 10, 4.
• Weekly Jump Rank "S" mission: Select Wind and then select 12, 5, 4.
• V-Jump Rank "S" mission: Select Lighting and then select 5, 10, 1.

Cheat Passcodes            (Some Unsure)

Cheat list

By completing the game on Easy difficulty, you will unlock the ability to use the following cheats:

• Unlimited breath
• No textures
• Glasses

Unlockable: Time Trial Secrets Set the game difficulty to "Time Trial" and complete the following trials to earn the unlockable extras:

Unlimited 50 Cal. Pistol
Complete Peru

Unlimited SMG + Unlimited Health
Complete Egypt

Golden Shotgun + SMG
Complete Lost Island

Unockable: Mercenaries Mini-Game

Beat the game to unlock the mercenaries mini game.

Unlockable: Punisher Weapon

Shoot 10 of the fifteen blue medallions in the game. There is a map you can find in the farm area just beyond the first village with the bell tower. After collecting the map, the locations of all fifteen medallions will appear on your map. When you've destroyed at least 10, talk to the merchant for a free gun.

 Unlockable: Assignment Ada Mini-game

Unlockables

• Bam Margera: Finish his Pro Challenge
• Beaver Mascot: Unlock the High School
• Bob Burnquist: Finish his Pro Challenge
• Bum: Acquire Car Factory level
• Daewon Song: Finish his Pro Challenge

Unlock All Extras

To unlock all extras in the game, go to the main menu and press: LEFT, TRIANGLE, RIGHT, TRIANGLE, DOWN, CIRCLE,X.
 

Unlockable: Vorador Art
Complete the game.

Unlockable: Kain Montage

You must complete the game.
 

Unlockable: Swap Pistol with Mini-gun Collect 204 medals. To use the handgun once more, you will need to use the Pistol Mk.4 cheat.