Build up the brick multiplier to activate the super car

Throw troublemakers into each other 5 times during Gang Fight Challenges

Complete Chapter 3 - Go Directly to Jail

Complete Chapter 2 - Blast from the Past

Use a Weasley box with every Weasley

Defeat every Harry freeplay variant as Lord Voldemort

Unlock every character with a pet (Single Player Only)

Unlock every pyjama character variant (Single Player Only)

Unlock ALL of the Order of the Phoenix character variants (Single Player Only)

Defeat 30 Red Caps

Defeat Bellatrix with Neville (Waiter) in a duel

Unlocked on hitting 50% game completion (Single Player Only)

Complete "The Flaw in the Plan"