Overview
Estimated achievement difficulty: 3/10
Offline: 36 (1000)
Online: 0 (0)
Approximate amount of time to 1000: 25 ~ 30 hours
Minimum number of playthroughs needed: 2
Does difficulty affect achievements?: No
Glitched achievements: None
Do Cheats Effect Achievements : No ( Recommended to use these, game play time will reduce by 5 ~ 10hrs)
Collectables Guide can be found here Credit to RadiantViper (x360a)
Play through 6 levels in yr 1 in story mode and this achievement will unlock.
Senior 50gs
Complete Year Two Story Levels
Play through 6 levels in yr 2 in story mode and this achievement will unlock.
Prefect 50gs
Complete Year Three Story Levels
Play through 6 levels in yr 3 in story mode and this achievement will unlock.
Head Boy 50gs
Play through 6 levels in yr 4 in story mode and this achievement will unlock.
Teacher's pet 70gs
During the story mode you will have to complete spell lessons to progress, once you have completed these this achievement will unlock. (These are really easy and it will tell you onscreen what you need to do)
Story Complete! 70gs
When you have completed all 6 levels across the 4 year modes, you will unlock this achievement.
Crest Collector 30gs
See The Ultimate Collector.
Crest Fanatic 30gs
See The Ultimate Collector.
Ultra Collector 30gs
See The Ultimate Collector.
The Ultimate Collector 30gs
As with all lego based games, you can only collect some of these during main story mode playthrough, and need to complete the game a second time with special characters, in this case characters with Dark Magic to open special items which glow red. There are 4 corner pcs to each level, and 6 levels to each year, so in total 96 pcs to collect. This is made easier with the Crest Detector Enabled.
Power Up! 45gs
Throughout hogwarts and free play you will need to collect the red blocks, which as with the crests go towards your 100% completion, the real give away to finding these is the white owl sat on the red perch, if you come across one of these there is a block hidding or near by. Much easier with the red block detector enabled.
You`ll need to collect 200 of these, you get these from learning spells, freeing the pupil's in peril and collecting them throughout hogwards etc. Gold block detector makes life more simple for these.
Student Rescue 45gs
There are 50 of these to collect throughout Hogwarts and story mode, there are a few more difficult ones not because they are hard to collect, more so because they are easily missed. The picknick basket in Hagrads back garden is one in particular, just smash everything and anything and you will find them.
Stud Magnet 30gs
Really easy especially with stud multipliers enabled, just get true wizard on all levels by collecting lego studs and this achievement is yours.
You're the Best 70gs
You`ll need to do and collect everything for this one, and this is the one which takes the time as with all lego games. Just collect everything, and do all the lessons, true wizard and the bonus levels and this will unlock.
Dark Wizards 10gs
Professor Quirrel, Tom Riddle, Voldemort are needed for this, collect the character tokens throughout the game and once you are able to collect these characters this achievement will unlock. Voldermort unlocks after completing the final bonus level where you need to collect 1 million lego studs.
Quidditch Team 10gs
Oliver Wood, Angelina Johnson, Katie Bell, Alicia Spinnet, Fred Weasley, George Weasley, and Harry Potter are needed for this achievement to unlock, as with dark wizards collect the character tokens for this to unlock.
Back in Time 10gs
Just use Hermione's special power by pressing B at one of these clocks, time will change and the achievement will unlock.
Building Blocks 30gs
Just complete all the training sections and this will unlock.
Good Dog 10gs
Select Fand "The Dog" when you are near a hornets nest. Don't destroy the nest, and just use fang to kill the Hornet 20 times.
Wonderful Weasleys 10gs
You need Ron, Ginny, Fred, George, Arthur and Molly for this achievement, same process as dark wizards and quidditch team.
Quirrell Quandary 15gs
You can only do this after completing the final bonus level and unlocking Voldermort. You need to select level 1~6 and with Voldermort kill quirrell the boss.
Multiplier 10gs
With the stud multiplier on this will be a sinch, go to bonus level 1 collect the studs and this will unlock at 10 million studs.
Arachnophobic 10gs
During the boss fight in Year 2, don't kill the Aragog boss spider. Kill all of the Smaller spiders that spawn with Ron. When you have killed 20 this achievement will unlock.
You can either buy this spell during the story mode or unlock with cheat *ERA9DR*. Once you have obtained go back into the street and freeze 20 people for this achievement to unlock.
Boo! 10gs
When you have obtained a ghost character (there are a few) just use the X button to scare 20 people for this achievement to unlock.
Animagus 10gs
You need to collect the following characters for this to unlock, Rita Skeeter, Remus Lupin, Professor McGonagle, Peter Pettigrew, Sirius Black.
Defeating the Object 10gs
When you have unlocked Quirrell, replay the level Out of the Dungeon and defeat the troll using Quirrel for this achievement to unlock.
Watch Out! 15gs
The are a few places this can be done during story mode, jump on a ride me object and knock 10 people down for this achievement to unlock.
Solid Snape 15gs
Once you have unlocked professor Snape, find a barrel and hit B to jump inside to unlock this achievement.
Role Reversal 15gs
With Lord Voldemort Use "Avada Kedavra" which is the green one with the Skull to defeat Harry, anywhere during year 4 level 6. Lord Voldemort will unlock after collecting all of the 200 gold bricks. When you have killed Harry this achievement will unlock.
Quiet Please! 15gs
When in the library enter the menu and set the music volume to 0 for this achievement to unlock.
Muggle Trouble 15gs
With a Muggle character (someone that can only hit, and has no magic abilities) kill 10 enemies. I did this on the The Forbidden Forest level and killed the bees. Once you have killed 10 this achievement will unlock.
Lumos Solem 15gs
You will probably kill some of these plants during the story mode, but if not repeat year 1 level 6 there are 5 on this level. Once you have killed 50 this achievement will unlock.
Quick Quidditch 15gs
During Year 1 level 3 you have to complete this in under 5 mins, you`ll probably do this during free play. Just run through this level as quick as you can to complete in under 5 mins to unlock this achievement.
Ghostly Treasure 15gs
Whilst in Hogwarts follow the ghost character which leaves behind the ghost studs and collect them, when you have collected 500 studs this achievement will unlock.
I'm not even sure why they bothered giving cheat codes for the spells. You can't enter those codes until you learn Wingardium Leviosa, and by the time you learn that as long as you've been using the money codes you'll have millions of dollars and can buy all the spells at once from the store.
This is the way to go, because it'll also save you the hellish tedium of entering all those numbers and letters for the cheat codes (why in God's name can't you fast scroll when entering them?!?).