Grand Theft Auto: Chinatown Wars

Take a boat to any corner of the map to see the message "Here Be Dragons!" message on the ocean floor.

Earn gold medals on all weapons at the gun club.

Use the following trick to avoid hotwiring a car with your tools or PDA. Enter the car, then immediately exit and get back in. You can now start the car without any problems. Note: The car alarm may briefly turn on.

As you approach a toll booth on a bridge, press exit your car while it is still rolling. If done correctly, car will glide through the booth. You can then get back in the car without paying the toll and not getting a wanted level.

Complete all five Vigilante mission levels with a 100% kill rate.

Drop off fifteen consecutive passengers without the timer running out. All taxis that you enter will be bulletproof.

Get in a very fast car or a motorcycle. Hold Square + X then hold Left or Right to do a spinning burnout. Release Square + X for a speed boosted start with a wheelie. Your burning tire tracks can burn the people behind you.

Enter one of the following codes during game play while outside of a safehouse. A sound will confirm correct code entry. Enabling codes may prevent trophies from becoming unlocked.

Armor
Press L(2), R, X(2), Circle(2), R during game play.

Cloudy weather
Press Up, Down, Left, Right, Triangle, Square, L, R during game play.

Explosive pistol rounds
Press L, R, Triangle, Square, Circle, X, Up, Down during game play. Repeat the code to disable its effect.

Foggy weather
Press Up, Down, Left, Right, Square, X, R, L during game play.

Health and armor
Press L(2), R, Circle(2), X(2), R during game play. Note: When enabled inside a vehicle this code will also repair it, if damaged.

Hurricane weather
Press Up, Down, Left, Right, X, Square, R, L during game play.

Increase wanted level
Press L(2), R, Square(2), Triangle(2), R during game play.

Lower wanted level
Press R, Triangle(2), Square(2), R, L(2) during game play.

Rainy weather
Press Up, Down, Left, Right, Square, Circle, L, R during game play.

Stormy weather
Press Up, Down, Left, Right, Circle, Triangle, R, L during game play.

Sunny weather
Press Up, Down, Left, Right, Circle, X, L, R during game play.

Weapon tier 1
Press R, Up, X, Down, Left, R, X, Right during game play. This code unlocks the grenade, nightstick, pistol, minigun, assault, micro SMG, and stubby shotgun.

Weapon tier 2
Press R, Up, Circle, Down, Left, R, Circle, Right during game play. This code unlocks the Molotov cocktail, taser, dual pistols, flamethrower, carbine, SMG, and dual-barrel shotgun.

Weapon tier 3
Press R, Up, Square, Down, Left, R, Square, Right during game play. This code unlocks the mine, chainsaw, revolver, flamethrower, carbine, SMG, and dual-barrel shotgun.

Weapon tier 4
Press R, Up, Triangle, Down, Left, R, Triangle, Right during game play. This code unlocks the flashbang grenade, bat, pistol, RPG, carbine, micro SMG, and stubby shotgun.

Very sunny weather
Press Up, Down, Left, Right, X, Triangle, L, R during game play.

When you are on fire (for example, after touching a flaming car), press Square to roll a few times to put out the flames.

Go to the Beach Gate district in the bottom right corner of the first island (where Mikhail Faustin's house is in Grand Theft Auto 4). After entering that area, go behind the third house to the right to find the Go-Kart in the garden.