Restore health:
If you are down on health and have no Wiggenweld Potions, go to the dueling club in the Great Hall and duel. If you win, your health will go back up to full. The same thing happens if you lose.

Easy beans:
You can get lots of beans and Wiggenweild Potions in Fred and George's bathroom. Play as Ron and go to the back room. Go up to the robes and press A for both sides. Beans and sometimes Wiggenweild Potions will appear. Go through the secret wall, then go back to Fred and George's. Go to the robes and do the same thing. Keep going back and forth and you will have plenty of beans.

Ron gets stuck:
When you first fight the Hinkypunks in the Neville and the Ghoul level, you will see a mirror and a crystal ball. To get through the door, you must cast Lumos Duo on the ball. That will cause the ball to be charged with light, and send it at the mirror. Ron will walk away from the ball and towards the mirror on his own. However, if you squeeze behind the crystal ball before casting Lumos Duo, then Ron will walk into the crystal ball and become stuck there, between it and a few boxes.

Invisible pumpkin head:
In the Dueling Club mini-game, when an enemy casts the pumpkin headed charm on you, you may see the pumpkin explode when the charm is on you, but the character will still be walking around and making muffled noises as if it is still on them. Then, when the pumpkin is supposed to explode, you can see pumpkin pieces go everywhere when you did not have one on your head.

Standing on other characters:
It does not matter which character is active, but this seems to happen most with Hermione. If you are on a platform above another character and jump down, you will stand on top of them and sometimes will not be able to get back down unless you switch the active character.

Snape talks like Sir Cadagon:
On the last day, go to the dungeons and you will see Snape. Keep hitting him with Flipendo. You will hear Sir Cadagon, but if you look closely, Snapes' mouth is moving.

Snape appears as a skeleton:
If you walk past Snape extremely slowly, you can see him turn into a skeleton.

Defeating Fire Salamanders:
Make Hermione the leader, then use Glacious on them. They will turn blue. Then, use Flippindo and they will be destoryed. Use Glacious on the cracks or more salamanders will appear. Note: Use Flippindo quickly because the Fire Salamanders can still move.

Defeating the metal armor:
He will try to spin around to attack you. You must dodge it, and when he stops, use the spell that grabs things. You must grab each of his four shields. When the shields hit the ground they will turn into monsters. Once you kill all four, he gets swords. He will stop spinning. Wait before you grab his head with the spell, because he will hit his swords on the ground. After he does this, grab his head and yank it off to defeat him.

Defeating the fire armor:
When fighting the fire armor thing when you just got Glacius, to avoid the shooting fire rocks when he opens up, stay directly in the middle. You should be able to avoid almost all of them.

Start with Flipendo until he opens his mouth, then use Glacius until he sort of explodes (this does not mean that he is defeated). One of his arms will come off. Use Glacius to put out the fire, then use Flipendo to destroy it. Repeat until he is defeated.

When in the Glacius Challenge, you will defeat a big fire armor opponent. Walk back through the first big room on your way out of the challenge. Suddenly, a monstrous fire beast magically emerges from the big objects in the room. When the fire thing opens its furnace door, use Hermoine to freeze the inside. It will attack, then launch its arm at you. destroy it, and it will get hurt. Repeat this and you should defeat it.

Defeating Dementors:
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 defeat the Dementors on the lake, instead of running through, charge up the Patrounus fully. Then, run around the right side and hit the one attacking Sirius.

To defeat the Dementor cluster, instead of going straight, go around the right side without hitting a Dementor. Then, hit the one that is attacking Sirius.

Defeating the Ghoul:
On the "Neville And The Ghoul" level, after you have completed all of the tasks and have opened the chamber, light Lumos Duo in its eyes. Then, lead it into the chamber to lock it in.

Defeating Hinkypunks:
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.

Use the following trick to defeat Hinkypunks in Muggle Studies. As Ron in the Muggle Studies classroom level, when you enter the room with the Lumos spellbook, three Hinkypunks should appear. Once you defeat the Hinkypunks, another group should appear. You must defeat all the Hinkypunks before you will be able to charge up the crystal ball, maneuver the mirror to shine the beam on the eyeball, and open the door.

Defeating Professor Lupin:
Professor Lupin is difficult to defeat because all your spells only do 1 damage. Use all your potions on Buckbeak, though only when he is certain to die without them. Use Fumos on Buckbeak. There is not much you can do, except Harry's folio's has the Cracker Jinx and the Sonourous Charm. The Cracker Jinx does 40 damage, though the Sonourous Charm does 70 damage. Teach Buckbeak how to block with Hermione's special section. Note: If Buckbeak dies, you must start all over again