On this page of our guide to Layers of Fear 2, we have described the exploration of bedroom in Act 3. It's one of the rooms that has to be explored during the 3rd act of the game. In bedroom there is a complicated riddle with dimensions to complete.
Walk along the metal balcony above the hall with the projector. The key to the Bedroom will hang at the entrance to the ventilation shaft. Take the key, open the shaft and start making your way through it.
On your way, you will stumble upon a note. You should, just as before, jump into a large hole in the floor and you find yourself inside the house again. Find the door to which the key fits, and jump into the bedroom.
Now, you have to solve the puzzle in the bedroom, but before that, you should take a look around the room. You can find a drawing, look at a framed photo and take a slide out of the night table.
Approach the painting and take the note torn with teeth.
Stand on the bed, over which hangs a mannequin, and use the torn page on it. The graphic style will shift, signaling you go to another dimension.
In the new version of the bedroom, approach the house of cards and interact with it to get a card (ace).
Go back to the dummy and interact with it to return to the original bedroom. Now go to the statue of the woman. Place the torn page on it to change dimensions again.
Approach the two mannequins playing cards. Put the ace into the hand of the dummy on the left, thus reinforcing its deck. You can pick up the necklace from the folder lying at the feet of the right dummy.
Go back to the statue of a woman and interact with her to return to the previous dimension. Once again, go to the dummy over the bed and place the torn page on it.
Approach the rack shown in the picture and place the necklace there.
Return to the mannequin above the bed to return to the original dimension. Go towards the wall shown in the picture and place the torn page on it.
You will unlock the exit from the bedroom and, after a short walk, again find yourself on the metal balconies above the projection room.