Grand Theft Auto IV: The Complete Edition Cheats - Xbox 360

URLs
Go to an internet cafe and type in this URL www.love-meet.net - a dating website.
www.vipluxuryringtones.com - free themes for Niko's phone & ringtones for $100 each.
www.whattheydonotwantyoutoknow.com - Weapon, health, armor, vehicle, pigeon, ramp/stunt, and entertainment locations.

Cell Phone Passwords
At any time during the game, pull out Niko's phone and dial these numbers for the desired effect. Please note that cheats will affect missions and achievements. 468-555-0100 - Change weather.
486-555-0150 - Get a different selection of weapons.
486-555-0100 - Get a selection of weapons.
267-555-0100 - Lower wanted level.
267-555-0150 - Raise wanted level.
362-555-0100 - Restore armour.
482-555-0100 - Restore health, armor, and ammo.
948-555-0100 - Song information.
227-555-0142 - Spawn a Cognoscenti.
227-555-0175 - Spawn a Comet.
938-555-0100 - Spawn a Jetmax.
359-555-0100 - Spawn a Police Chopper.
625-555-0150 - Spawn a Sanchez.
227-555-0168 - Spawn a SuperGT.
227-555-0147 - Spawn a Turismo.
227-555-0100 - Spawn an FIB Buffalo.
625-555-0100 - Spawn an NRG-900.

Achievements
Perform the required task to unlock the achievement. Assassin's Greed - Complete all 9 assassin missions - 20 points.
auf Wiedersehen Petrovic - Win all ranked multiplayer variations, all races and Cops 'n Crooks, as both sides - 30 points.
Chain Reaction - Blow up 10 vehicles in 10 seconds - 20 points.
Cleaned The Mean Streets - Capture 20 criminals through the police computer - 20 points.
Courier Service - Complete all 10 package delivery jobs - 10 points.
Cut Your Teeth - Earn a personal rank promotion in multiplayer - 5 points.
Dare Devil - Complete 100% of the unique stunt jumps - 30 points.
Dial B for Bomb - Unlock the special ability of phoning for a bomb to be placed - 10 points.
Driving Mr. Bellic - Unlock the special ability of taxi - 10 points.
Endangered Species - Collect every hidden package - 50 points.
Fed The Fish - Complete the mission Uncle Vlad - 5 points.
Finish Him - Complete 10 melee counters in 4 minutes - 15 points.
Fly The Co-op - Beat Rockstars time in ranked versions of Deal Breaker, Hangman's NOOSE, and Bomb da Base II - 15 points.
Full Exploration - Unlock all the islands.
Genetically Superior - Come first in 20 singleplayer street races - 25 points.
Gobble Gobble - Score 3 strikes in a row, a turkey, in 10-pin bowling - 10 points.
Gracefully Taken - Complete mission I'll Take Her - 10 points.
Half Million - Reach a balance of $500,000 - 55 points.
Impossible Trinity - Complete mission Museum Piece - 10 points.
It'll Cost Ya - Complete a taxi ride without skipping from one island to another - 5 points.
Join The Midnight Club - Win a ranked multiplayer race without damaging your vehicle too much and have damage enabled - 10 points.
Key To The City - Achieve 100% in Game progress statistic - 100 points.
King of QUB3D - Beat the High Score in QUB3D - 15 points.
Let Sleeping Rockstars Lie - Kill a Rockstar developer in a ranked multiplayer match - 10 points.
Liberty City (5) - After you meet all friends, the ones left alive like you above 90% - 20 points.
Liberty City Minute - Complete the story missions in less than 30 hours - 30 points.
Lowest Point - Complete mission Roman's Sorrow - 5 points.
Manhunt - Complete the most wanted side missions from police computer - 15 points.
No More Strangers - Meet all random characters - 5 points.
Off The Boat - Complete the first mission - 5 points.
One Hundred And Eighty - In a game of darts score 180 with only 3 darts - 10 points.
One Man Army - Survive 5 minutes on 6 star wanted level - 40 points.
Order Fulfilled - Complete all 10 Exotic Export orders - 10 points.
Pool Shark - Beat a friend at pool - 10 points.
Retail Therapy - Unlock the ability to buy guns from a friend - 10 points.
Rolled Over - Do 5 car rolls in a row from one crash - 30 points.
Sightseer - Fly on all helicopter tours of Liberty City - 5 points.
Taking It For The Team - Be on the winning team in all ranked multiplayer games - 10 points.
Teamplayer - Kill 5 players who are not in your team, in any ranked multiplayer team game - 10 points.
That Special Someone - Complete the mission That Special Someone - 10 points.
That's How We Roll! - Unlock the special ability of helicopter - 10 points.
Top Of The Food Chain - Kill 20 players with a pistol in a ranked multiplayer deathmatch - 10 points.
Top The Midnight Club - Come first in 20 different ranked standard multiplayer races - 20 pointsWanted.
Under the Radar - Fly underneath the main bridges in the game that cross water with a helicopter - 40 points.
Walk Free - Lose a 4 star wanted level by outrunning the cops - 50 points.
Wanted - Achieve the highest personal rank in multiplayer - 20 points.
Warm Coffee - Successfully date a girl to be invited into her house - 5 points.
Wheelie Rider - Do a wheelie lasting at least 500 feet on a motorbike - 30 points.
You Got The Message - Deliver all 30 cars ordered through text messages - 20 points.
You Won! - Complete the final mission - 60 points.

Friendship Bonuses
By gaining friendship with the following people can benefit you in many ways. 50% off for all Clothing Stores - Get 80% Relationship Status with Alex.
Boom? (Call Packie for him to make you a car bomb) - Gain 75% friendship with Packie.
Chopper Ride (He will pick you up in his helicopter) - Gain 70% Friendship with Brucie.
Discount Guns (Buy weapons at a cheaper price from Lil Jacob) - Gain 60% friendship with Little Jacob.
Extra Help (A car of gang members will be sent to help you out) - Gain 60% friendship with Dwayne.
Free Ride (Call for a taxi) - Gain 60% friendship with Roman.
Health Boost (Call Carmen and select Health Boost) - Get 80% Relationship Status with Carmen.
Remove Up to 3 Wanted Stars (Call Kiki and select Remove Wanted) - Get 80% Relationship Status with Kiki.

Unlockables
Annihilator Helicopter - Kill all 200 Flying Rats.
Rastah Color Huntley SUV - Complete 10 Package Delivery missions.
Remove Ammo Limit - Get 100% completion.

The Heart of Liberty City
First, you'll have to have access to Happiness Island. Once you're able to go there legally, find the Helicopter Tours (which is directly east of Happiness Island) and steal a helicopter. Fly to Happiness Island and over the Statue of Liberty, then jump out of the helicopter at the statue's feet. You should land on the topmost tier of the statue, which is basically a square platform with a door in the center of each side. Run around the platform until you see a door with a plaque on either side of it that reads, No Hidden Content Here. It may seem like you cannot go through the door, but you can-- it doesn't open, you simply walk THROUGH the door. Inside, you'll find an empty room with a tall ladder. Climb it, and when you reach the top, look up; there is a gigantic beating heart, held in place by chains.

Easy money
Go to an ATM, then cause a traffic jam to the area. Wait for someone to take money from the ATM, then kill him or her. Make sure to block any nearby roads so the ambulance cannot get to the murdered victim. Take the money they dropped on the ground. Then, run a short distance away, and go back. The money should have respawned on the ground. You can repeat this as many times as desired. You can also kill more people taking their money from the ATM to increase the amount of money that respawns.

Mr. tasty + GTA Theme Cheat
When inside a Mr. Tasty Ice Cream truck, one of the the songs the truck plays is called the GTA Theme, in a cycle order it is usually played after Flight of the Bumblebee. While playing the song, call ZiT, and a text message will confirm telling you the name of the song. As soon as the message is answered, a Cheat Activated confirmation will appear, and the cheat will appear in the Cheat section in your phone. Effects: Cheat gives you full healith and Body Armor

Repairing the engine
If the vehicle you are driving breaks down and the engine will not start, call any number from your phone book, and your engine should start again.

Cheat Codes
Dial these codes into your cell phone in game to gain the effect, go to the cheat menu in your cell phone to use previously entered cheats whenever. 625-555-0200 - Akuma (Bike).
272-555-8265 - APC(Tank).
359-555-2899 - Buzzard(Helicopter).
468-555-0100 - Change Weather.
938-555-0150 - Floater(Boat).
362-555-0100 - Health & Armour.
482-555-0100 - Health, Armor and Advanced Weapons.
359-555-7272 - Parachute.
267-555-0150 - Raise Wanted Level.
267-555-0100 - Remove Wanted Level.
486-555-2526 - Sniper rifle bullets explode.
359-555-0100 - Spawn Annihilator.
227-555-9666 - Spawn Bullet GT.
227-555-0142 - Spawn Cognoscenti.
227-555-0175 - Spawn Comet.
938-555-0100 - Spawn Jetmax.
625-555-0100 - Spawn NRG-900.
625-555-0150 - Spawn Sanchez.
227-555-0168 - Spawn Super GT.
227-555-0147 - Spawn Turismo.
227-555-0100 - Spawns a FIB Buffalo.
276-555-2666 - Super Punch (exploding punches).
625-555-3273 - Vader(Bike).
486-555-0100 - Weapons (Advanced) (New Weapons).
486-555-0150 - Weapons (Poor).

Unlockables
.44 in Safehouse - Complete 10 gang wars.
Advanced MG in Safehouse - Complete 20 gang wars.
Explosive Shotgun in Safehouse - COmplete 30 gang wars.
Gold SMG in safehouse - Complete 50 gang wars.
Golden Buzzard - Beat the game to unlock a Golden uzzard on a heliport over the Booth Tunnel.
NOOSE APC at construction site - Kill all 50 seagulls.
Parachute in safehouse - Complete 15 base jumps.
Remove ammo cap - Achieve 100% completion.
Sticky Bombs in Safehouse - Complete 40 gang wars.

Cheat codes for All Ranges, (NEW CODES)
Few codes based upon the new game, Some old codes work aswell. 362-555-0100 - Give Armor.
482-555-0100 - Gives Health, Armor And Ammo.
267-555-0100 - Lower Wanted Level.
267-555-0150 - Raise Wanted Level.
486-555-0150 - Weapon Package #1.
486-555-0100 - Weapon Package #2.

Spawn Vehicles
Press up on the D-pad twice to take out your phone and enter these cheats: 227-555-0142 - Spawn a Cognoscenti.
227-555-0175 - Spawn a Comet.
227-555-0100 - Spawn a FIB Buffalo.
938-555-0100 - Spawn a Jetmax.
625-555-0150 - Spawn a Sanchez.
227-555-0168 - Spawn a Super GT.
227-555-0147 - Spawn a Turismo.
625-555-0100 - Spawn an NRG-900.
359-555-0100 - Spawn Annihilator.
826-555-0150 - Spawn Burrito.
245-555-0125 - Spawn Double T.
245-555-0199 - Spawn Hakuchou.
245-555-0150 - Spawn Hexer.
245-555-0100 - Spawn Innovation.
826-555-0100 - Spawn Slamvan.

Gang Wars Unlockables
Assault shotgun in safehouse - Complete 40 gang wars.
Automatic pistol in safehouse - Complete 20 gang wars.
Carbine Rifle in safehouse - Complete 30 gang wars.
Grenade launcher in safehouse - Complete 50 gang wars.
Sawn-off shotgun in safehouse - Complete 10 gang wars.

Remove Ammo Limit
Get 100% completion.

Unlock vehicles
Bati 800 - Complete all of Angus' bike theft missions.
Hokachu - Beat 12 Races in single player.
Innovation - Kill all 50 seagulls.

Unlock Weapons for delivery by Jim.
You can call Jim for delivery of a weapon at the clubhouse. There are special weapons available after completing specific missions. Automatic Pistol - Finish the Bad Cop Drop mission.
Micro SMG - Finish the Clean And Serene mission.
Pipe Bombs - Finish the Hit The Pipe mission.
Sawed-off Shotgun - Finish the Clean And Serene mission.

Picture of Wayne and Garth from "Wayne's World"
Get a Rhapsody and look at the dashboard with a sniper rifle to find a picture of Wayne and Garth.