Time from first control: 2:17:58

World Record because nobody else has ever bothered to actually run this. Lots of cutscenes, lots of wrestling against the controls, and lots of luck with the battles, stairs and students walking in your way. But learning your way around Hogwarts is good fun! Managed to get it done faster than the movie, too.

The run ends after defeating Voldemort using Occlumency. The game doesn't display any credits, but that's the end of the story and final cutscene, and the rest of the game is side-quests and exploration.