Chlorhydric

Voldemort's Demise Complete "The Flaw in the Plan"

All Was Well Complete Year 8

Kick the Bucket Complete "Snape's Tears"

Wit Beyond Measure… Complete "Fiendfyre Frenzy"

You and Whose Army? Complete "Burning Bridges"

Hogwarts has Changed Visit the Hogwarts Foyer in Year 7/8

Undesirable No. 1 Complete "Back to School"

"That's Unfortunate" Complete "The Thief's Downfall"

Here Lies a Free Elf Complete "DOBBY!"

To Be Continued Complete Year 7

The Tale of the Three Brothers Complete "Lovegood's Lunacy"

Soul Searching Complete "Sword and Locket"

Shedding Skin Complete "In Grave Danger"

A Wise Disguise Complete "Magic is Might"

Lessons Learned Complete all lessons (Single Player Only) (Years 5-7)

Cake or Death Eater? Complete "The Seven Harrys"

Lighten Up Use the Deluminator

Dumbledore's Demise Complete "Horcrux and the Hand"

I am the Half-Blood Prince Complete Year 6

A Riddle Revealed Complete "Felix Felicis"

Sectumsempra Complete "Love Hurts"

Weasleys' Wizard Woes Complete "A Not So Merry Christmas"

The Slug Club Complete "Just Desserts"

Chair-ismatic Complete "Out of Retirement"

He's Back! Complete "A Veiled Threat"

Phoenix Rising Complete Year 5

Accordion to Grawp Complete "A Giant Virtuoso"

Did Santa Eat That Cake? Complete "Kreacher Discomforts"

Attempt to Resist Complete "Focus!"

Off the Beaten Track Complete "Dumbledore's Army"

Albus Percival Wulfric Brian Complete "Dark Times"

Head Boy Complete Year Four Story Levels

Story Complete! Complete the Story Levels in all four years

Teacher's Pet Complete All Story Lessons (Years 1-4)

Back in Time Use the Time-Turner

It's a Cook-Off! Finish 15 games in Versus Mode

Dinner Party Posse Finish 15 kitchens in Arcade
15/15

Prefect Complete Year Three Story Levels

Bangers and Trash Put 99 items in the bin
99/99

Rooting For You Win a kitchen in Versus Mode

Something Fishy Play as a Aquatic creature in a Sushi Level

It's RAAW Deliver a wrong dish 10 times
10/10

Boxing Champion Get 3 Stars in a level where each player is a Box Chef. Only available in Classic Mode.

Bear Picnic Play a level from Campfire with 4 Bear Chefs

New World Order Play a level with 4 Reptile Chefs

The All Seeing Fry-Cook Play a level with 4 chefs wearing glasses

Monster Mash Play Overcooked! 4-2, with a Werewolf, a Ghost and a Vampire Chef

They Suspect Nothing... Play a level with 4 players, of which 3 are the same chef

Senior Complete Year Two Story Levels

Ghostly Treasure Collect 500 ghost studs (Years 1-4)