LEGO Harry Potter: Years 1-4

LEGO Harry Potter: Years 1-4

37 Achievements

20-25h

PS3
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Boo!

Boo!

Scare 20 students using a ghost character

8.2%

How to unlock the Boo! achievement in LEGO Harry Potter: Years 1-4 - Definitive Guide

This achievement *may* work on characters other than students. I got it last night using Professor Bins in Diagon Alley. There was a group of 5 or 6 characters hanging out by the wagon and I just scared the group until it unlocked. There were a couple of students there (Draco and one or two others) but there were also several adult wizards in colored robes. Again, I'm not sure if it works on others or not. If there were two students there and I scared them ten times that may have done it.
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09 Jul 2010 11:10

5 Comments
To confirm, this works on adults as well as students.
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By Hells Reborn on 14 Aug 2010 14:14
Works great!
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By Knockout Moose on 02 Feb 2012 19:49
It definitely works on adults too.
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By Mtld on 03 Oct 2013 12:14
Yeah, I did the same, adults and students in Diagon Alley. It unlocked pretty quick so I feel that's probably the easiest way.
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By iMaginaryy on 19 Dec 2013 22:30
It works on any character in Diagon Alley, As stated in the comment above^^ it is the easiest way to get it.
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By TSGTDRAGON on 02 Oct 2014 07:56
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Earliest ghost character to get would be the Fat Friar.

Once you've accessed the Polyjuice Potion and can change into Justin, go back to the Hufflepuff common room (next to yours) and go in. The Fat Friar is located in that room, so you're just a step away from purchasing him in Diagon Alley.
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26 Jun 2010 13:58

3 Comments
what button do you press to scare them because x just freezes them. im real confused!!
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By TubbyBud bud on 28 Jun 2010 16:20
Pressing X is all you have to do - it literally scares 'em stiff. Not sure whether it's twenty different people to be scared stiff, or just twenty times, but I did it easily in Hogwarts after using the Polyjuice Potion again.
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By Boost17 on 29 Jun 2010 10:28
@Boost17: You can scare the same people twenty times. Tip: Try to find a group of 3-4 people and scare them a few times.
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By EmperoxGrayland on 07 Aug 2010 05:09
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In the Hogwarts hub, choose a ghost character at a Polyjuice cauldron. Press Square when you are next to one or more students and they will turn blue and stop moving. You can do it on the same group of students more than once.
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27 Sep 2019 19:09

First you will need to find and purchase a ghost character. You will get these through collecting everything anyway.

  • Professor Binns
  • Lily Evans
  • James Potter
  • Bloody Baron
  • The Fat Friar
  • The Grey Lady
  • Nearly Headless Nick
  • Moaning Myrtle

Then you will need to go to Hogwarts and find some Polyjuice Potion (the gold cauldrons). Use that to change yourself to any of these characters, then go around and press in front of anyone you see and they will freeze. You can frighten the same people over and over and still get the trophy.

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When you unlock a featured character (The first one I unlocked was Bloody Baron). After purchasing a character, use the Polyjuice Potion, which is located near the entrance to the store where you buy characters. Swap to Bloody Baron, and then just scare any wizard that walks in Diagon Alley (do this by pressing ).When you scare twenty people, the trophy should appear. It took me about 2 minutes.
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14 May 2011 10:31