Slight spoilers:

So, in level 4, you fight the guy in the tomb and pick up multiple variously shaped items. Then you also get a couple more from the red guards in the prison. After that, you are supposed to drop 2 pieces on each the pressure plates in order to lower them and start unlocking doors.

Does anyone have any idea, how you are supposed to know which pieces to drop where? I assume it has something to do with the painting on the tomb with the pieces being carried by a varying amount of bulls and humans and somehow comparing that to the shapes on the pressure plates. But I was absolutely unable to find any logic in it. The pressure plates always have 2 symbols on them so at first, I assumed you are supposed to drop the same shapes as on the plates. This only worked for one however, and the other 2 require seeming nonsensical combinations, like 2 square ones when there is a semi circle and a rectangle on the plate or whatever. I got the key open with trial and error, but also wanted to save the prisoners. Seems like the only method is to brute force or figure out whatever the devs tried to tell by the painting in the tomb.

Given how far the previous save point is and that you receive a decent chunk of damage on every wrong try, I just looked up the combinations in a guide. Even seeing the correct combinations, I had zero clue how to arrive at them. Had I been able to save anywhere, I would have brute forced it of course, but didn't want to waste time really. Anyone know the logical solution to this?