Sandra’s Treasure Dungeon Puzzle
The code in the first area is 2-5-6-4. You get it by counting the things shown on stone plates hanging higher, not directly above the ground.
A hint about the god is given saying „In his opinion only those who were above others had any worth.“, which is supposed to tell you which plates are correct and which to ignore.
In the second area, there are stone pillars in line with the torches at the top of the map. The third pillar is broken, indicating that this torch should not be lit, while every other should be.
When you have the right combination, there is no sound or message, but the iron gate will be open now.