Before giving you the detailed walkthrough, I will do two things to help you. First a general idea of how I did get through this part of the game so you can try on your own too. Then the map, so you can find the way around. And finally the detailed instructions to get the exit open if needed.

Let's get started!

This might be very simple, but it really is the base of beating the puzzle by yourselves. You need to use paper & pen.

As you might have guessed from the sections of this guide, that is how I beat this game, taking a good sheet of paper and drawing everything on it from the top down perspective. So I could know where are the items, plates, doors and traps.

The goal is to get the four odd plate having a statue on them, to do that you need first to find those four statutes (there is one you get before entering that area though), and you need to know that placing a statue on a plate will change the status of dorrs and traps linked to this plate. An active trap will be disabled, while a disabled trap will be activated.

Now, all you need to do is draw everything, and the link between the paltes and their doors/traps.

Final piece of advice make sure that the map shows the doors/traps in their original position, and once you have everything reload the chapter to start from a clean point.

Not much to say here other than providing you with the map, the doors and traps have the respective number of the plates that are linked to them. One door and one trap have no numbers because while searching I did not actvated those, so they are probably link to an odd numbered plate. They should not be needed to get out once you get access to every statutes.
Good Luck!

And here is the step by step walkthrough for those who want the easiest way. Directions are linked with the map orientation.

First how to get all the statues :

Use your statue you pick outside on plate #7
Pick the statue at the bottom left
Use the statue on plate #1
Move the staue from plate #7 to plate #9
Pick the statute from the bottom right
Use the statue on plate #5
Pick the statue on the top right

Then in which order to activate the odd plates :

Use the statue on plate #6
Move the statue from plate #5 to plate #8
Move the statue from plate #9 to plate #2
Move the statue from plate #1 to plate #4