The Bookwalker: Thief of Tales

I must say first of all, I didn't get it. I'm playing the Xbox version (Xcloud) and there are some issues about it. I will explain better later.

There are 4 steps to achievement:
1 — Get the item to open the door
2 — Open the door
3 — Bring the drink to the student
4 — Find the secret room

1 — here are two options for this. In book 3, after getting the lighter, Light a total of 5 candles scattered around the classrooms to unlock the magic door. When you do, enter it, .

(The second option basically boils down to creating a crowbar.)

2 — If you crafted the crowbar or gained the key, go down the stairs. There is a door next to the science lab door. Use the key or the crowbar to open it, it's a wine room or something. There may be a battle inside, after winning, approach the wall and use the lighter. A passage will open and you'll find a chest with Wine. I don't remember if the chest is locked, but a lock pick should solve the lock.

Edit: I found out that you can talk to one of the teachers in a certain classroom, and he'll give you a key to open a door in the corner of your classroom. Inside the door is a chest with wine as well, I believe it's an easier workaround.

3 — After getting the wine, you can go to the dorms and look for a room that has only one boy. Talk to him, and he'll end up trading your wine bottle for a portrait of a woman.

4 — Now that you have the portrait, just exit the school to the Hall of Portraits (This salon is the one in the shape of the letter T). You'll see that there's a portrait on the wall that was stolen, approach it and fit the painting that the boy gave you. An animation will open a passage, you enter and the achievement is yours.

Important note: In my version of the game, I already had the painting and I was pressing A to place it on the wall but the command was not obeyed. So the conquest is locked in for me anyway. I don't know if this was an exclusive issue, or for everyone on Xbox