Code              Result

--------------------------------

123123          - Unlimited Health

opqw1`2         - Unlimited Health

hubert152200    - Unlimited Health

Steam achievements:

-------------------

Complete the following tasks to unlock the corresponding achievement. 

To view your achievements and stats in Steam, select "Community", then

"My profile", then "View all my games", then the game and view stats.

Achievement          How to unlock

-------------------------------------------------

Almost There       - Finish 2nd in a ranked match.

Baron              - Reach rank 25.

Could be worse     - Finish 3rd in a ranked match.

Decorated          - Obtain one of each prize in the game.

Duke               - Reach rank 60.

Earl               - Reach rank 40.

Grand Player       - Finish as the best player in a ranked match.

Headhunter         - 2001 crossbow headshots.

Infantry Warfare   - Obtain all weapon efficiency prizes.

Knight             - Reach rank 20.

Marcher Lord       - Reach rank 50.

Mounted Warfare    - Obtain all Mounted prizes.

Shire Reeve        - Reach rank 13.

Squire             - Reach rank 7.

Support Efficiency - Obtain all support efficiency prizes in the game.

Viscount           - Reach rank 30. 

Yeoman             - Reach rank 1.

Cheat Codes:

------------

Enter one of the following binary codes to unlock the cheat option. To use

a cheat, pause game play and turn it on at the "Code Enhancement" menu. 

When a cheat is enabled, that particular chapter will not be available for

replay after the game has been completed. 

Code        Effect

------------------  

01010111  - Unlocks Airplane Bodyguard

01110100  - Unlocks Cinematic Mode

01100101  - Unlocks Close Combat Mode

01010100  - Unlocks Cross

01001100  - Unlocks Health Improvement

01101101  - Unlocks Infinite Adrenaline

01101111  - Unlocks Infinite Ammo

01000100  - Unlocks Janice

01110010  - Unlocks One Shot One Kill

01100001  - Unlocks Special Suit

01001111  - Unlocks Super Weapons

01000011  - Unlocks Wesly

01100111  - Headshot Mode

01000100  - Unlocks message: 'Use 01000100 in DVD'

Unlockable: Characters:

-----------------------

To play as any character besides Wesley or Cross, defeat that

character (on any difficulty). Here is a list of characters:

Airplane Bodyguard  - Complete Headshot mode/ Unlocked with Code 01010111

Brummel             - Defeat Brummel during game play. 

The Immortal        - Defeat The Immortal during game play. 

Nightmare           - Complete Close Combat mode. 

The Original Spider - Defeat The Original Spider during game play. 

The Russian         - Defeat The Russian during game play. 

SWAT Leader         - Defeat SWAT Leader during game play.

Arana               - Kill Arana on Assassin difficulty.

I had seen that GTA 5 have same cheats as of GTA 4. 

So here are cheats:

Effect                                 Password

---------------------------------------------------

Change weather                       - 468-555-0100

Get a different selection of weapons - 486-555-0150

Get a selection of weapons           - 486-555-0100

Raise wanted level                   - 267-555-0150

Remove wanted level                  - 267-555-0100

Restore armour                       - 362-555-0100

Restore health, armor, and ammo      - 482-555-0100

Song information                     - 948-555-0100

Spawn a Cognoscenti                  - 227-555-0142

Spawn a Comet                        - 227-555-0175

Spawn a Jetmax                       - 938-555-0100

Spawn a Sanchez                      - 625-555-0150

Spawn a SuperGT                      - 227-555-0168

Spawn a Turismo                      - 227-555-0147

Spawn an Annihiliator                - 359-555-0100

Spawn an FIB Buffalo                 - 227-555-0100

Spawn an NRG-900                     - 625-555-0100

Cheat Codes - GTA 4:

--------------------

Submitted by: Lucas_BR

All you need to do in order to activate the following status boosts and spawn tricks

is use Niko's mobile phone to call the related numbers. Though 360 achievement whores:

please note, cheats 1 - 4 will block the "Cleaned The Mean Streets" achievement while

5 and 15 will do the same for "Walk Free".

 1, Health And Weapons            - GTA-555-0100

 2, Weapons                       - GUN-555-0150

 3, Advanced Weapons              - GUN-555-0100

 4, Health                        - DOC-555-0100

 5, Wanted Level Down             - COP-555-0100

 6, Wanted Level Up               - COP-555-0150

 7, Climate Change                - HOT-555-0100

 8, Spawn Cognoscenti (Mafia Car) - CAR-555-0142

 9, Spawn Sanchez (Dirt Bike)     - MBK-555-0150

10, Spawn FBI Buffalo             - CAR-555-0100

11, Spawn Turismo                 - CAR-555-0147

12, Spawn NRG900                  - MBK-555-0100

13, Spawn Comet                   - CAR-555-0175

14, Spawn SuperGT                 - CAR-555-0168

15, Spawn Police Chopper          - FLY-555-0100

16, Spawn Jetmax (Boat)           - WET-555-0100

Cheats:

-------

Submitted by: Nithin

health and weapons                - 4825550100

health and armour                 - 3625550100

weapons (adv)                     - 4865550100

Weapons tier 1                    - 4865550150

Weapons tier 2                    - 4865550100

Remove Niko's wanted level        - 2675550100

Change weather and brightness     - 468