So, what's the order of the code for the second door? I know to follow the arrow, but that doesn't exactly help when there's multiple floors. I'm too dumb for this. ;-;
Viewing post in Leaden Sky - Official comments
Go to the highest floor, pick the number on the left side, then go to the right side, same floor and pick the second number.
Then go downstairs, pick number on left side then right side same floor.
It looks like this:
top floor (numbers left to right) + floor below (numbers left to right)
Numbers are randomized each time you reload the game