Harry Potter & the Chamber of Secrets Cheats (GameBoy Advance)

Gemstone 1: In the first chest box near the slugs.

Gemstone 2: Defeat all three Fire Turtles.

Gemstone 3: In the box next to the switch that activates the crushers. 

Gemstone 4: In gem cart near were the mine carrying cart that takes you out is located.

Gemstone 5: In boulder. To get out, turn on crusher, put the boulder under it, and turn
the crusher switch.

Have the selected spell as Inciendio. This should do more damage than Flipendo. When you
enter the chamber, Fawks should "take" his eyes, making him blind. When he goes in a
circle, continuously cast Inciendio. Make sure he does not touch you, or you will be
poisoned. Watch out when he makes rocks come down and dodge his spit. This may take
awhile, but you will eventually defeat him.

Complete the five Famous Witches and Wizards cards "Creatures" in your collection. After
you collected all five, there will be a new category in your menu which will give
information about the creatures you will commonly see in the game.

When facing Peeves in Restricted section of the library, use a full force Flipendo spell
on him first to make him hide in armor suits. When he hides, immediately use a full force
Flipendo spell on the armor suit where he hides. It will be destroyed. Be careful, as it
sometimes gives off Dungbombs which costs 3 points of life. Repeat the steps, as there are
four armor suits. When all are destroyed, use a full force Flipendo spell again on Peeves
until he gives up.

The following cards are referred to from left to right. 

First card: Found during your Leviosa Challenge.

Second card: Secret room in portrait hall.

Third card: Room in Flitwick's office.

Fourth card: Secret room, corner of Gryffindor common room where you light torches with
incendio to open a wall.

Fifth card: Bonus room in portrait hall, with male portrait.

When at the flying lessons press A at the start when the countdown reaches "1". Note:
Timing is critical.

Complete the five Famous Witches and Wizards card "Potions", and you will receive five
Girding potions.

This really isn't a useful cheat, but it's fun to do it. First, you must have at least one
spell(Duh!). If you have more than one spell, pick one, then do this: press R and A at the
same time. When you jump into the air by pressing R, you should be in the spell-casting
position. The spell should fire as soon as you hit the ground.

Some of the crystals are inside icicles. To get them you must use the 'flipendo' spell.
Those that are inside carts you can get by using the B button.

In order to get the last spell, Alohomora, you must get all five Famous Witches And
Wizards "Charms" cards in your collection.

When in the leaky cauldron, go into the room by the furnace and pull the lever found in
the room. Then, go out of the room. Go to the west side of the store. Pull the lever and
the bookcase will open. Go inside the room and open the chest. You will obtain the Floo
Powder. Take it to Ron and you will go to Hogwarts.

Defeat Peeves the first time you enter the Restricted section of the library on the second
floor.

You start in diagon alley in the quidditch shop. Buy Chudley-cannon's shirt. You must give
it to Ron when you have bought it. He will give you a baseball card. Give it to the boy in
the card shop. He gives you a wrongly printed card. Give it to the painter on the 6th
floor in Hogwarts. The painter gives you a little spider. Give it to Hagrid. He gives you
a necklace. Give it to Filch and he will give you a lockhart photo. Give it to the girl on
the 3rd floor. She will give you a flashlight. Give it to the boy in the classroom on the
5th floor. He will give you a mouth organ. Give it to the boy in the music classroom. He
will give you a whistle. Give it to the proffesor. He will give you the best armor in the
game.

Get all 25 wizard cards.