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.
Cast Confundo on Kreacher in Grimmauld Place.
As Draco, defeat Dumbledore in the Duelling Club.
As Draco Malfoy, cast Tarantallegra at another character.
Complete 100% of the game.
Collect all the characters.
Collect all Minikits.
As Sirius, defeat Bellatrix in the Duelling Club.
As Voldemort in a suit, defeat Arthur Weasley in a suit in the Duelling Club.
As Voldemort, defeat Harry Potter in Duelling Club.
Defeat all duellers in each category.
Defeat all duellers in the Bonus Duelling category.
Defeat all duellers in the Death Eater Duelling category.
Defeat all duellers in the Ministry of Magic Duelling category.
Use only Protego during a duel in the Duelling Club.
Defeat all duellers in the Order of the Phoenix Duelling category.
Defeat all duellers in the Hogwarts Duelling category.
Defeat all duellers in the Dumbledore's Army Duelling category.
Defeat all duellers in the Open Duelling category.
Collect all the Red Bricks.
Defeat one of each enemy.
Bank 100,000,000 studs.
Bank 10,000,000 studs.
Defeat all duellers in the Student Duelling category.
Complete Deathly Hallows - Part 2.
As Molly Weasley, defeat Bellatrix without taking damage in the Final Battle.
Defeat Voldemort without taking any damage.
As a Death Eater, cast at anyone in the Hogwarts Hub.
Enjoy all the fun in the playground.
As a custom character, defeat Lily and James Potter in the Duelling Club.
Complete Deathly Hallows - Part 1.
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.
Take no damage when duelling in Duelling Club.
Complete Order of the Phoenix.
Cast Levicorpus on an enemy.
Fail to put together puzzle pieces after six attempts.
Create your own character in the character customiser.
Achieve a single True Wizard Stud Total.