Harry Potter and the Prisoner of Azkaban Cheats

You will first come in contact with Hinkypunks on the same level with the Ghoul. Hunkypunks are ghost-like creatures with one foot and a lantern. To defeat them, have Ron shine Lumos Duo in their faces. When they become solid and zombie-like, finish them off with Flipendo.

When Ron buys stink pellets from Fred and George, they set him a challenge.
Ron has to find 20 of these snake things on the walls and throw a stink pellet into them to turn them up the other way.
For every 5 you get Fred and George will give you a special Collectors Card.
The locations are as follows:
7th Floor
1. North Wing
2. Next to the Fat Ladies portrait
6th Floor
3. In Fred and George's bathroom
4. East Wing
5th Floor
5. Through the first door
4th Floor
6. Forth Floor Coridoor
7. Above Hospital Wing door
3rd Floor
8. Third Floor Coridoor
9. Defence Against the Dark Arts Classroom
2nd Floor
10. Secret Passagway
1st Floor
11. Hidden in a secret passage behind the Gregory the Smarmy statue
12. Transfiguration Classroom, climb the bookshelves on the left
13. Transfiguration Classroom, climb the bookshelves then walk around the ledge to the other side
Staircase
14. Between the Sixth and Seventh Floor, you have to stand closer to the seventh floor landing to get it
15. Above the Forth Floor Door
16. On the bottom Floor
Dungeon
17. Outside the Potions Classroom
18. Furthur down the same coridoor
19. Potions Classroom
20. Entrance Hall, nearest the Hufflepuff hourglass

1.the badge is behind the house point things.
2.the rememarald is at stone circle in front of the courtyard.
3.the potion vial case is in the corner of the second floor corridor.
4.the dragon hide gloves are up the stairs in the defence against the dark arts classroom.
5.the owl post parcle is in the corner the place that leads to stone circle.
but i duno the rest.

On the Glacius challenge (you play it as Harry) there are icey ramps
that you slide down. At some points you will come to a split path (the
ramp divides into two ramps). Whenever you come to a split the game will
tempt you to take the left path by placing more valuable treats on it.
However every time you take the path to your right, you will find a
challenge shield! 

Clear out the Dementors in the middle then go up to the Dementors that are
sucking the soul out of Sirius and attack them. The health meter at the bottom will
go down. Keep attacking until you defeat it. Do this quickly, as Sirius only has a bit
of health.

To defeat the Dementors in the first stage (where you drag Sirius Black), do not
wait until the Dementors are sucking the soul out of Sirius. Hit any of them that
edge closer with Expecto Patronum. After a few hits, the first stage will be over.

The second stage of the Dementors is much more difficult. There are many more.
Shoot Expecto Patronum at the Dementors (do not power up as Sirius will get
weaker), and press X to charge at them. Break through the crowd in the back.
Once you have a path cleared, go for the Dementor attacking Sirius. Power up
until it automatically shoots. Remember to press X to charge and go faster. If you
take too long the Patronus will die down.

To kill a Salamander first use the Glacius spell to put out the fire on its back and to turn it icy and then shoot it with Flipendo (Knockback Jinx).