The end | Walkthrough HP and the HB Prince Guide
Last update: 11 May 2016
Head to the Potion Club and approach the wooden board [1]. Go to the last page and select the Wiggenweld potion [2], which will increase your stamina during duels.
Go to the top of the Astronomy Tower [1] and speak with Dumbledore [2].
After the cutscene you will have to fight off some living skeletons [1]. It's not hard. All you have to do is strafe and cast Stupefy [2].
After dealing with three waves of skeletons, another cutscene will play [1]. Afterwards, another battle awaits you [2]. The enemy is quite powerful, so use the bookshelves as cover.
After the duel you will have to fight some more enemies, including Fenrir [1] and in the end - Bellatrix [2]. The enemies are quite strong, however the basic strategy - Levicorpus followed by a maximally charged Stupefy still works great. Once you finish the last battle, a cutscene will play and the game will end.