The following procedure involves editing a game file so it is advised that you create a backup copy of the file before proceeding. Use a text editor to edit the 'defuser.ini' file in the '\ea games\harry potter and the chamber of secrets\system' folder. Find the following texts by scrolling down to the end of the file.
Change the values of 'fDamageMultiplier_Easy', 'fDamageMultiplier_Medium' or 'fDamageMultiplier_Hard' (depending on the level you have selected) to 0.1 to get less damage.
Added by: Sanzano Jul 20th 2010, ID#15174