Achievement Unlocked

Complete the Grimmauld Place tutorials.

Guide
Storyline achievement. This will unlock early in the game, just after you've completed the early tutorials.

Discover the Room of Requirement.

Guide
Storyline achievement. Neville will direct you there early in the game.

Recruit Dumbledore's Army.

Guide
Storyline achievement. To recruit the DA, you must complete certain tasks given by each of the members, some supersimple, some a little more complex. You can find each one of the members on the Marauder's Map.

Cause chaos in Umbridge's Hogwarts.

Guide
Storyline achievement. After you've recruited the DA members and Umbridge have taken over Hogwarts, you are given 4 more quests located on the Marauder's Map. The quests involving setting off swamp bombs in the courtyards, sabotaging Umbridge's speakers, and sabotaging the clock. Once you've completed all of those, you take control of the Fred and George flying around Hogwarts on broomsticks setting off fireworks.

Finish the story.

Guide
Storyline achievement. This will be unlocked once you beat Voldemort as Harry, and finish the game.
First, you'll be in control of Sirius Black battling Lucius Malfoy and Bellatrix Lestrange. No matter what you do, you are supposed to lose this battle, meaning even if you actually beat your opponents, you die. So, to save time, just take all of their best shots.
When you're in control of Dumbledore, make sure you're constantly casting Protego to protect yourself while using any of the offensive spells on Voldemort. Strafing will avoid the furniture he's constantly throwing at you.
Finally, as Harry, you will have to force Voldemort out of your memory, just like from the mandatory lessons given by Snape. Simple enough, just tap the Right Stick to force Voldemorts wand to the middle.

Meet all characters in the game.

Guide
There are 58 characters in the game you will have to meet. If you intend to complete the game 100%, this should be no problem to unlock. Each of the DA members count, the teachers, etc. If done correctly, this will unlock once you meet Voldemort at the end of the (storyline) game.

Discover all known areas of Hogwarts.

Guide
As te description says, you will have to discover each of the areas of Hogwarts. The areas are listed in the left column of the Marauder's Map, so basically you will just have to go through the list. Shouldn't be too hard to do.

Cast all defensive spells in a single encounter.

Guide
After you've collected each of the Dumbledore's Army members, and taught each of the spells, you can either challenge any Slytherin student to a duel, or use them in any of the storyline fights as Harry.

Discover enough to complete discovery level 1.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 2.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 3.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 4.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 5.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 6.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 7.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 8.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 9.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 10.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 11.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 12.

Guide
See Complete discovery level 13.

Discover enough to complete discovery level 13.

Guide
To unlock the Complete discovery level x. achievements, you must use the non combat magic spells on certain objects in the different areas to interact with them. If your spell was successful, blue orbs will appear from the items and and culmulate points to the next discovery level. To complete level 13, you will basically have to 100% each of the areas. You can see how the percentage of discovery made in each of the areas by using the Marauder's Map. If you find yourself stuck, make use of this excellent guide on GameFAQs.com

Discover the password for every shortcut portrait in Hogwarts.

Guide
The portraits referred to are the ones that you can speak with. Each of them has a twin portrait, and walking through one is bascially a shortcut to the area in which the other are. To discover them, you must talk to one of them, and solve a riddle/task to open the shortcut. Once you've done that with all of the portraits, the achievement will unlock.

Fat Lady portrait (Grand Staircase - Gryffindor Room)
This portrait leads to the Gryffindor Room, and is required by story line. The portrait will ask you for a password that all Gryffindors should know. Luckily, you don't have to go far to find someone who can tell you the password, as there should be one standing right next to you on the steps. Simply ask him for the password, and then say it to the portrait.

Ravenclaw portrait (Grand Staircase - Second floor)
To befriend this portrait you will have to find out where Rowena Ravenclaw comes from. To do that, all you will have to do is talk to any Ravenclaw student. Once you got the answer, simply return to the portrait.

Hufflepuff portrait (Grand Staircase - Transfiguration Courtyard)
You must be a friend of the Hufflepuffs in order to open this portrait's secret passage. In order to open it, simply find, and talk to, a Hufflepuff student who in turn will remember that you've already helped out Cederic Diggory. Then return to the portrait, and talk to it.

The Riddler portrait (Grand Staircase - Boathouse)
This guy's portrait password hunt is actually quite annoying. You will be given a clue, and you must find out what the clue means, and then go seek it out. For example, when you are asked to locate a portrait, you are unable to use it (each time you talk to it, it will just tell you the next "clue") until you have found the next clue. This is a pain, because the quest foottrail usually leads through the portraits, even though you are unable to use them. I usually just finish this portrait up as fast as possible. Anyway, here's how to open the secret passage:
1. You will be asked to seek out the Man With Faces Three. This is the schizofrenic portrait on the seventh floor, in the area where the Room of Requirements is.
2. The portrait will send you to another portrait, which is the Ravenclawn portrait in the Grand Staircase.
3. Once again you will be directed to a portrait, only this time it is not a "special" portrait with a secret passage, this is just a regular portrait (if a regular portrait is a talking one :-p) of a sherpedess located on the Second Floor. The easiest way to describe where she is would be to say that she's is on the wall on the last landing of the staircase leading to Herbology.
4. She in turn will direct you to the portrait hanging on the bottom floor in the Viaduct Entrance, so go there and talk to him to be sent to yet another portrait.
5. The portrait you must find now is actually the Hufflepuff portrait, which is in the Grand Staircase. Talk to him, and you will finally be given the password. Return to the riddler portrait to end this nonsense.

Hungry portrait (Grand Staircase - Clock Tower)
This portrait is the one who complains about being hungry. You must help her get some food, and in order to do that, you must go to the Hufflepuff portrait and talk to him. Once you've done that, go back to this portrait and she'll let you through.

Astronomer portrait (Grand Staircase - Seventh Floor)
This portrait is at the very bottom of the staircase, and in order to obtain it's password you must first talk to Hannah Abbott, who is standing nearby. There is no specific task you must do for this portrait, he will simply reveal his password.

Forgetful portrait (Third Floor - Second Floor)
This is the portrait of a rather old man with a black robe, who, when spoken to, tells you that he do not remember his password, because he has not heard it for 50 years. You need to find the password, and to do that, you must seek out Myrtle in her bathroom.

Secretive portrait (Viaduct Entrance - First Floor)
This portrait is at the bottom of the stairs of the Viaduct Entrance. When you talk to him, he will agree to tell you the password on one condition - he will only tell you it. You will have to clear out the area before he'll reveal the password, and in order to do that, you must scare the students by pointing your wand at them. Once they're gone, talk to the portrait again to get his password.

News portrait (Library - Fourth Floor)
This is the slightly weird looking portrait located in the Library, which asks for the headline of the Daily Prophet. To obtain it, simply go to the Great Hall, cast Wingardium Leviosa (you might have to cast Depulso on it first, I'm not 100% sure.) An owl will fly down from the roof with and drop a news paper on one of the tables. Read it, then go back to the portrait and tell him the headline.

Frightened portrait - (Herbology Corridor - Fifth Floor)
This portrait is tired of being eyeballed (:-p) by the portrait hanging on the opposite wall. What you will have to do is cover up the eye portrait, and to do that, you must cast Reparo on the statues on both sides of it.

Schizofrenic portrait (Seventh Floor - Fourth Floor)
This portrait asks you to find himself, which means his other portrait (this guy is a nutcase!) You must find his counterpart on the fourth floor covered behind some cobwebs, and in order to reveal it you must have taught the spell Incendio. If you have, use it to burn away the cobwebs

Slytherin portrait - (Dungeons - Dungeon Corridor)
This is not possible to do before you've obtained the invisible cloak. You must first talk to the portrait, who in turn will sarcastically tell you that you must ask a Gryffindor student for the password. Go to the Gryffindor Common Room and get the invisible cloak from a chest on the second floor. Now return to the area of the portrait where a couple of Slytherin students uses the portrait and reveals the password. Return without the invisible cloak and tell your newly acquired password to the hag.

Find all the house ghosts of Hogwarts.

Guide
To find the ghosts, you must assemble four individiual portraits to create a whole portrait of the ghosts themselves. There are four in total of these, and they are:

1. Nearly Headless Nick (Third Floor)
2. The Grey Lady (Directly outside Library)
3. The Fat Friar (First Floor)
4. The Bloody Baron (Dungeon)

Find all the flying creatures of Hogwarts.

Guide
The flying creatures are all over Hogwarts. The birds (divided by species) are found:

Bats
You can find the bats beneath the Stone Bridge. You have to climb up on the side of the bridge near the entrance to First Floor. You will have to move by the wall, and go down to the lower level using the pipes. Eventually the bats will be discovered

Crows
You can find the Crows sitting on the ropes on the suspensed bridge, you just need to walk by them to discover them.

Owls
You can find the owls in the Owlery

Pixie
The only Pixie in the game is in the middle desk on the right side in the Defense Against the Dark Arts classroom. Cast Wingardium Leviosa on the desk.

Seagulls
The seagulls can be found by the Boathouse.

Complete all the teacher mini-quests.

Guide
These quests requires you to do whatever the teachers instruct you to. There are 4 teachers in totsl, and they are:

Minerva McGonagall (Transfiguration Courtyard)
She will ask you to find three students who are skipping detention. They are on the Seventh Floor, at the very bottom of the stairs leading to the Divination Tower

Filius Flitwick (Second Floor, near the Library)
To complete Flitwick's task, you must locate a book. The book is checked out from the Library by a girl who's sitting on the right side in Great Hall studying.

Severius Snape (Dungeon)
Snape is just infront of the round staircase that leads up from the Dungeon. The book you will need for writing is located in the Library, in the Restricted Section. You can locate it on the left hand side, in the second from last row.

Pomona Sprout (Greenhouse)
Another essay, and another book. Locate Neville in the Room of Requirements, who will tell you he has the book you need in the boys room in the Gryffindor Common Room. It will be on top of his dresser.

Beat all wizard chess champions.

Guide
There are three chess champions in total, and you will have to beat them chronolically.

1. Gryffindor Common Room
2. Great Hall
3. Library

If you have problems with any of them, I suggest you use play chess versus a computer, and chose black as your color. In the game, you will be white, so whenever the champions make a move as black, make the similar move in your game vs the computer, then use the computer's move in the game.

Beat all Exploding Snap champions.

Guide
The Exploding Snap players can easily be located in an area by all the snapping noises their cards make. Each of the players have different rules, but the basic is the same; you need to pair the cards. The players' locations:

1. Third Floor
2. Fifth Floor

Beat all Gobstones champions.

Guide
Gobstone is a type of game where you knock a marble within a large circle which makes out the arena of the game. It's an extremely slow and annoying game, but once you get the hang of it, it gets easier. There are 4 champions you have to beat, located in the different courtyards:

1. Entrance Courtyard - Traditional champion
2. Clock Tower Courtyard - Jack Stone champion
3. Paved Courtyard - Snake Pit champion
4. Paved Courtyard - Hogwarts champion (you need to beat the three other champions to play her, and to win, you'll have to beat her in all three gametypes.)

Traditional Gobstone
At the start of a game of the traditional gobstone game, a group of marbles will be lined in a circle in the middle of the arena, and the objective is to shoot as many stones out of the arena as possible. Both players take turns of shooting the marbles out, and if you shoot your own marble out, you lose a point. When facing the Hogwarts champion you are supposed to be the one who breaks the circle of marbles, and trust me, the champion basically never misses a shot. It took me ages to beat her in traditional gobstone, but I found a technique that at least gives you the edge. When you start the game, instead of breaking the circle, simply shoot your marble out of the arena. This will make the champion have to break the circle, and you can start concentrating on getting the marbles out. If you can hit each marble, you will win.

Jack Stone Gobstone
The objective here is to finish the game as close to the jack stone, which is in the middle of the arena, as possible. This might sound hard, but it really isn't, because you can sabotage the game for the computer. Each time the computer gets closer to the jack stone, all you have to do is aim your marble at the computer's and shoot it away.

Snake Pit Gobstone
Similar to Jack Stone Gobstone, but now it will be a hole in the middle of the arena instead. Also really simple, just do the same as what you did in Jack Stone Gobstone.

Find Luna's lost belongings.

Guide
After you've completed the storyline, you will be given the quest to find Luna's stuff which is spread throughout Hogwarts. The locations where you have to look:

1. Entrance Courtyard - Use Wingardium Leviosa on the broom and sweep up the leaves to find it under one of the piles.
2. Great Hall - First table on the left as you enter.
3. Viaduct Entrance - On the floor near the portrait.
4. Library - On the end of the table.
5. Clock Tower Courtyard - In front of the fountain.

Uncover all the hidden Hogwarts symbols.

Guide
The Hogwarts symbol appears as you solve puzzles in three different areas.

Entrance Courtyard
Use Wingardium Leviosa on the broom and remove all the piles of leaves in the area.

Paved Courtyard
First use Reparo on the broken staircase, then go along the balcony and repair the four statues here.

Transfiguration Courtyard
First cast Wingardium Leviosa on the globe in the middle, then cast Wingardium Leviosa on the benches, placing them on the shields with the same colors as the one that are beneath the shields.

Find Fred and George's hidden parcels.

Guide
There are 12 parcels you must locate.

Stone Circle
1. Use Depulso on the plant near a large rock
2. Use Depulso on a plant by the trail leading to the Owelry

Owelry
3. You will go directly through one when you're climbing on the side of the Owelry

Hagrid's Hut
4. Use Depulso on one of the plants behind the hut
5. Use Depulso on another plant
6. Use Wingardium Leviosa on a pumpkin and place it on top of the chimney.
7. While moving deeper into the woods there will be another plant along the trail, use Depulso on it
8. Following the trail, you'll come across another plant with a parcel. Use Depulso on the plant to have it appear.

Boathouse
9. On the right hand side outside the boathouse
10. There's one on the trail leading to the Paved Courtyard

Paved Courtyard
11. When retrieving Colin's camera, you will walk directly over a parcel.

Library
12. Use Depulso on the cupboard behind the table to locate it

Find the secret chess statues of Hogwarts.

Guide
There are 12 chess statues spread throughout Hogwarts. You might want to check out this FAQ at GameFAQs.com for detailed descriptions of their locations

Find the hidden wizard plaques around Hogwarts.

Guide
There are 15 wizard plaques hidden around Hogwarts. You might want to check out this FAQ at GameFAQs.com for detailed descriptions of their locations

Find all the rare creature tracks hidden in Hogwarts.

Guide
There are only 3 tracks to discover, all in the area around Hagrid's Hut. Luckily they're not that hard to find.

1 - Near the pumpkin field's end, opposite of the hut's entrance, near the stone wall
2 - On the left side of the trail going into the woods
3 - On the left side of the same trail, only deeper into the woods

Tidy up Hogwarts.

Guide
To tidy up Hogwarts, you must repair or clean 66 things. This should unlock by time if you're going for Complete discovery level 13., otherwise you might want to use this FAQ on GameFAQs.com

Finish the story on the hardest difficulty.

Guide
This sounds pretty simple, yeah? Just play the game once on Hard. But really, it isn't. Not because the game gets superhard on Hard, but the achievement is gllliiitttcccheeedddd. I played through the game three times before I could get the achievement. To read more about the bug, check this thread
Other than that, what can I say? I would recommend that you do not go for the full 1000 on Hard, because of the bug. Rather do all the achievements on the easier difficulties, then go for Hard in one sitting. The achievement should unlock just as you return to Hogwarts after beating Voldemort.

Got an 'O' in all lessons.

Guide
There are three lessons you must complete in order to get this achievement, and they are given by Snape, Flitwick and Sprout. I would recommend that you do these on Easy, as they will be very easy to complete. You will be pretty much instructed on how to do the lessons, and it is very obvious (and easy) how you complete them. Each one of them involves using your non-combat spells.

Cast 500 successful spells.

Guide
This will unlock by time. Just play through the game normally, and you should get it. If not, use magic on objects (Reparo on broken objects, Wingardium Leviosa on the brooms, etc.) or pick random fights with the students.

Covered 9 3/4 miles.

Guide
This should unlock by playing through the game normally.

Recruited 10 members of the DA.

Guide
This unlocks by playing through storyline, while rallying up the members of Dumbledore's Army

Recruited 20 members of the DA.

Guide
This unlocks by playing through storyline, while rallying up the members of Dumbledore's Army