When you complete the following missions the corresponding vehicle will become available to use.

Unlock Limo:
Complete 'Kill Phill'.

Unlock 'Little Willie':
Complete 'From Zero to Hero'.

Unlock Quadbike:
Complete 'When Funday Comes'.

Unlock Angel Bike:
Complete 'Taking the Fall' on Lance's safehouse only.

When you complete the following tasks in the indicated mission you will recieve the corresponding bonus to help you through the game.

Unlock Extra Armour:
Complete 15 levels of the Vigilante missions.

Unlock Maximum Health Increase:
Complete 15 levels of the Air Ambulance missions.

Unlock Infinite Energy when Swimming:
Complete 15 levels of the Beach Patrol missions.

Unlock Infinite Sprint:
Complete 15 levels of the Paramedic missions.

Unlock Bulletproof Businses Vehicles:
Take over ALL 30 businesses.

Unlock Free Pay 'N' Spray Usage:
Deliver ALL 32 vehicles to the Civil Asset Forfeiture Impound Yard.

Unlock Unlimited Ammunition and the Intermission Sequences in the Clymenus Suite:
Get a 100% completion.

Complete the following tasks to unlock the corresponding outfits

Unlock Cuban Style Clothes:
Complete the Umberto Mission Strand.

Unlock Casual Clothes:
Complete the mission 'Conduct Unbecoming'.

Unlock Trailer Trash Clothes:
Complete the mission 'D.I.V.O.R.C.E'.

Unlock Hired Muscle Clothes:
Buy a High Roller Protection Racket Empire State.

Unlock Mr. Repo Clothes:
Buy a 'High Roller' loan shark building.

Unlock Pastel Suit:
Buy a 'High Roller' drug dealing building.

Unlock Smuggler Clothes:
Buy a 'High Roller' smuggling building.

Unlock Hood Clothes:
Buy a 'High Roller' robbery building.

Unlock Lesuire Clothes:
Buy a High Roller Empire State.

During gameplay enter the following codes to unlock the corresponding effect.

Get $250,000:
Up, Down, Left, Right, X, X, L1, R1.

Unlock Armor:
Up, Down, Left, Right, Square, Square, L1, R1.

Cars Avoid You:
Up, Up, Right, Left, Triangle, Circle, Circle, Square.

ALL Cars are Black:
L1, R1, L1, R1, Left, Circle, Up, X.

Unlock Chrome Cars:
Right, Up, Left, Down, Triangle, Triangle, L1, R1.

Commit Suicide:
Right, Right, Circle, Circle, L1, R1, Down, X.

Destroy ALL Cars:
L1, R1, R1, Left, Right, Square, Down, R1.

Guys Follow You:
Right, L1, Down, L1, Circle, Up, L1, Square.

Health:
Up, Down, Left, Right, Circle, Circle, L1, R1.

Never Wanted:
Up, Right, Triangle, Triangle, Down, Left, X, X.

Peds Attack You:
Down, Triangle, Up, X, L1, R1, L1, R1.

Peds Have Weapons:
UP, L1, Down, R1, Left, Circle, Right, Triangle.

Peds Riot:
R1, L1, L1, Down, Left, Circle, Down, L1.

Unlock Perfect Traction:
Down, Left, Up, L1, R1, Triangle, Circle, X.

Raise Wanted Level:
Up, Right, Square, Square, Down, Left, Circle, Circle.

Unlock Faster Gameplay:
Left, Left, R1, R1, UP, Triangle, Down, X.

Unlock Faster Clock:
R1, L1, L1, Down, Up, X, Down, L1.

Unlock Slower Gameplay:
Left, Left, Circle, Circle, Down, Up, Triangle, X.

Spawn Rhino:
UP, L1, Down, R1, Left, L1, Right, R1.

Spawn Trashmaster:
Down, Up, Right, Triangle, L1, Triangle, L1, Triangle.

Unlock Foggy Weather:
Left, Down, Triangle, X, Right, Up, Left, L1.

Unlock Overcast Weather:
Left, Down, L1, R1, Right, Up, Left, Square.

Unlock Rainy Weather:
Left, Down, L1, R1, Right, Up, Left, Triangle.

Unlock Clear Weather:
Left, Down, R1, L1, Right, Up, Left, X.

Unlock Sunny Weather:
Left, Down, R1, L1, Right, Up, Left, Circle.

Unlock 25% of MP Content:
Up, Up, Up, Square, Square, Triangle, R, L.

Unlock 50% of MP Content:
Up, Up, Up, Circle, Circle, X, L, R.

Unlock 75% of MP Content:
Up, Up, Up, X, X, Square, R, L.

Unlock 100% of MP Content:
Up, Up, Up, Triangle, Triangle, Circle, L, R.

Unlock Weapon Set 1:
Left, Right, X, Up, Down, Square, Left, Right.

Unlock Weapon Set 2:
Left, Right, Square, Up, Down, Triangle, Left, Right.

Unlock Weapon Set 3:
Left, Right, Triangle, Up, Down, Circle, Left, Right.


Hidden Balloon Rewards:
Finding and popping the following amount of balloons will unlock the corresponding weapons at your safe house.

Unlock Pistol:
Find and pop 10 balloons

Unlock Scorpion (SMG):
Find and pop 20 balloons

Unlock Stubby Shotgun:
Find and pop 30 balloons