All Working Harry Potter and the Half-Blood Prince Cheats - Wii

Hogwarts Crest Bonuses
Collect crests to unlock various bonuses:

003 Crests - Two Player Dueling Pack 1: Draco & Luna.
008 Crests - More health in duels.
014 Crests - Two Player Dueling Pack 2: Training Ground Dueling Arena.
021 Crests - Dungbombs in prank boxes around Hogwarts.
029 Crests - Two Player Dueling Pack 2: Crabbe & Goyle.
038 Crests - Score boost in flying events.
048 Crests - Exploding Cauldrons in prank boxes around Hogwarts.
059 Crests - Two Player Dueling Pack 4: The Transfiguration Dueling Arena.
071 Crests - Even More health in duels.
084 Crests - Two Player Dueling Pack 5: Ginny & Hermione.
098 Crests - Love Potion in Potions Club.
113 Crests - Two Player Dueling Pack 4: Paved Courtyard Dueling Arena.
129 Crests - More mini-crests with each cast.

Easy Mini-Crests
You can get a large amount of Mini-Crests one time only, when you have used the Luck Potion and are making your way to Herbology. At this point, every time you use Diffindo to get the Mini-Crests to appear, you will get the full amount of Mini-Crests available, due to your luck. Get as many as possible at this point to help reach the 25,000 pieces goal.