Here is the full list of all 41 LEGO Harry Potter: Years 5-7 trophies - there are 22 bronze, 15 silver, 3 gold and 1 platinum.
Acquire all trophies.
As Draco Malfoy, cast Tarantallegra at another character.
As Voldemort in a suit, defeat Arthur Weasley in a suit in the Duelling Club.
Complete 100% of the game.
Collect all the characters.
Defeat all duellers in each category.
Defeat all duellers in the Bonus Duelling category.
As Draco, defeat Dumbledore in the Duelling Club.
Defeat all duellers in the Death Eater Duelling category.
Defeat all duellers in the Ministry of Magic Duelling category.
Defeat all duellers in the Order of the Phoenix Duelling category.
As a custom character, defeat Lily and James Potter in the Duelling Club.
Cast Confundo on Kreacher in Grimmauld Place.
As Voldemort, defeat Harry Potter in Duelling Club.
Bank 100,000,000 studs.
Defeat all duellers in the Hogwarts Duelling category.
As a Death Eater, cast at anyone in the Hogwarts Hub.
Defeat all duellers in the Dumbledore's Army Duelling category.
Bank 10,000,000 studs.
Defeat all duellers in the Open Duelling category.
Defeat all duellers in the Student Duelling category.
Collect all Minikits.
Collect all the Red Bricks.
Enjoy all the fun in the playground.
Fail to put together puzzle pieces after six attempts.
As Molly Weasley, defeat Bellatrix without taking damage in the Final Battle.
As Sirius, defeat Bellatrix in the Duelling Club.
Complete Deathly Hallows - Part 2.
Defeat Voldemort without taking any damage.
Complete Deathly Hallows - Part 1.
Defeat one of each enemy.
Complete Half-Blood Prince.
Cause the Inferi to destroy each other in the cave.
Force any enemy creature to attack another.
Blind an enemy creature.
Create your own character in the character customiser.
Use only Protego during a duel in the Duelling Club.
Take no damage when duelling in Duelling Club.
Complete Order of the Phoenix.
Cast Levicorpus on an enemy.
Achieve a single True Wizard Stud Total.