Harry Potter and the Chamber of Secrets: The Secret Challenge

You cannot reach this challenge normally in the game. You have to cheat and activate the debug mode to be able to access it. The game developers removed it.. several points to prove why. 1) The trigger to secret #4 in the second half of the chamber of secrets dungeon was removed. This tells me that getting 100% of the secrets in the game would have normally unlocked this challenge. 2) Most importantly, when you enter the challenge.. there are no cutscenes or tutorials, or even a challenge Timer! 3) When you complete the challenge, it does not indicate anywhere that you have done so.