Harry Potter And The Deathly Hallows, Part 1 (Wii)
Select "Options" at the main menu, then select "Unlockables". Then, enter one of the following codes to activate the corresponding cheat function.
p, av, abe
Stronger Protego Totalum charm
Press C, A, 2, Minus, Down, B to strengthen your Protego Totalum charm so that nothing can get through it.
Strategy guides from GameFAQs