Harry Potter and the Order of the Phoenix: Department of Mysteries

Get ready for more fighting. After a few cut-scenes you'll gain control of Sirius fighting against Lucius Malfoy and Bellatrix Lestrange. As you probably know, result of this fight is predetermined.

A few interludes later you will have to fight Voldemort. This time you control Dumbledore. This duel consists of three stages. First one is a classic fight - all you have to do is to hit Voldemort with all you've got. I highly recommend mass Expelliarmus and Protego, because they're very easy to cast. To embellish it a bit, cast Rictusempra and Stupefy from time to time.

Some time later Voldemort will teleport himself to inaccessible place - this is the second stage of fight. From now on all offensive spells cast by you will be accumulated and released on you. There's only one way to win: cast Protego while spells are flying to hit you. This way they'll be deflected.

You'll recognize third stage by items flying around Voldemort. It's quite similar to first stage, except that you have to cast Protego more frequently.

In the end Voldemort will desperately try to break into Harry's mind. You'll have to win the last occlumency minigame. It's going to be a bit longer than those Snape lessons. Victory ends story mode.