Achievements
"That's Unfortunate" (10): Complete "The Thief's Downfall"
A Dish Best Served Cold (20): Defeat Bellatrix with Neville (Waiter) in a duel
A Minifig's Best Friend (30): Unlock every character with a pet (Single Player Only)
A Riddle Revealed (10): Complete "Felix Felicis"
A Sirius Family Issue (20): Defeat Bellatrix as any Sirius Black character variant in a duel
A Wise Disguise (10): Complete "Magic is Might"
Accordion to Grawp (10): Complete "A Giant Virtuoso"
Albus Percival Wulfric Brian (10): Complete "Dark Times"
All Was Well (50): Complete Year 8
Attempt to Resist (10): Complete "Focus!"
Avid Reader (25): Use a Quibbler dispenser 25 times
But... I Am The Chosen One (100): Complete the game to 100% (Single Player Only)
Cake or Death Eater? (10): Complete "The Seven Harrys"
Chair-ismatic (10): Complete "Out of Retirement"
Collector's dream (25): Complete the Bonus Level
Dark Times Ahead (25): Unlock every bad wizard (Single Player Only)
Did Santa Eat That Cake? (10): Complete "Kreacher Discomforts"
Dumbledore's Demise (10): Complete "Horcrux and the Hand"
Halfway There (30): Unlocked on hitting 50% game completion (Single Player Only)
He's Back! (10): Complete "A Veiled Threat"
Here Lies a Free Elf (10): Complete "DOBBY!"
Hogwarts has Changed (30): Visit the Hogwarts Foyer in Year 7
I am the Half-Blood Prince (25): Complete Year 6
Idling (20): Stand still with no controller input for 5 minutes
Kick the Bucket (10): Complete "Snape's Tears"
Knuts and Vaults (50): Collect 1 billion studs (Single Player Only)
Lessons Learned (30): Complete all lessons (Single Player Only)
Lighten Up (10): Use the Deluminator
Not "Fun Guys" (15): Defeat 30 Red Caps
O Children (20): Complete the scene where Hermione and Harry dance in the tent
Off the Beaten Track (10): Complete "Dumbledore's Army"
Phoenix Rising (25): Complete Year 5
Pyjama Drama (20): Unlock every pyjama character variant (Single Player Only)
Sectumsempra (10): Complete "Love Hurts"
Shedding Skin (10): Complete "In Grave Danger"
Soul Searching (10): Complete "Sword and Locket"
Tall Order (40): Unlock ALL of the Order of the Phoenix character variants (Single Player Only)
The Slug Club (10): Complete "Just Desserts"
The Tale of the Three Brothers (10): Complete "Lovegood's Lunacy"
To Be Continued (25): Complete Year 7
Undesirable No. 1 (10): Complete "Back to School"
Voldemort's Demise (10): Complete "The Flaw in the Plan"
We are the D.A. (30): Unlock all of the members of Dumbledore's Army (Single Player Only)
Weasley Does It (25): Use a Weasley box with every Weasley
Weasleys' Wizard Woes (10): Complete "A Not So Merry Christmas"
What if? (20): Defeat every Harry freeplay variant as Lord Voldemort
Wit Beyond Measure... (10): Complete "Fiendfyre Frenzy"
Witch! (50): Unlock all witch characters (Single Player Only)
You and Whose Army? (10): Complete "Burning Bridges"