A slip of paper in the barrel from the intro section has some symbols, but I must be missing something because there are six symbols (five of which are possible to enter), and the lock takes four.
the note doesnt have anything to do with it, trust me i tried, vie found 2 secret areas that show u one of the symbols, u need to find 2 other ons. the ones i found are when u press the down button on the elevator 10 times and the other is down the hatch behind the house with the fuses
