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.

Password Effect

468-555-0100 Change weather
486-555-0150 Get a different selection of weapons
486-555-0100 Get a selection of weapons
267-555-0150 Raise wanted level
267-555-0100 Remove 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
625-555-0150 Spawn a Sanchez
227-555-0168 Spawn a SuperGT
227-555-0147 Spawn a Turismo
359-555-0100 Spawn an Annihiliator
227-555-0100 Spawn an FIB Buffalo
625-555-0100 Spawn an NRG-900

Map Locations - Enter the following password into the in-game computers. (NOTE: This URL does not work in a real web browser outside of the game. Please do not complain to us about it.)

Password Effect

www.whattheydonotwantyoutoknow.com Weapon, health, armor, vehicle, pigeon, ramp/stunt, and entertainment locations

Friendship Bonuses - By gaining friendship with the following people can benefit you in many ways.

Unlockable

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

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