Collect all of the hats

Avoid ever being seen in Pursuing Peter Pettigrew

Buy every version of Voldemort (Quirrell/Tom Riddle/Voldemort)

Buy the entire Gryffindor Quidditch team from Book One

Collect 10 million studs in one level

Collect 4,000,000,000 Studs

Acquire all character tokens

Collect all of the Red Bricks

Complete All Story Lessons

Complete the Story Levels in all four years

Complete the Quidditch level within five minutes

Complete Year One Story Levels

Complete Year Two Story Levels

Complete Year Three Story Levels

Complete Year Four Story Levels

Defeat the mountain troll, using Quirrell

Complete the game to 100%

Collect all of the hats in Year 1

Collect all of the hats in Year 2

Collect all of the hats in Year 3

Collect all of the hats in Year 4

Get True Wizard in every level

Defeat 20 spiders with Ron

Defeat Quirrell in the Quirrell boss fight, using Voldemort

Defeat Voldemort (as Voldemort), in the Graveyard

Defeat the mountain troll without taking damage

Defeat the final Basilisk battle without taking damage

Defeat the Whomping Willow without taking damage

Avoid all the Dragon's fireballs in The First Task

Turn the sound and music down to 0 in the options menu whilst in the library

Unlock all Animagi

Unlock the entire Weasley family

Use the Time-Turner

Acquire and view all the Mini-kit models