Edit the Safe code is 1302, to unlock near the above right side (click switch 3 to turn on the light in the dark hallway, switch 2 plus flip the power box to turn off the light to confirm the reveal of the code.
Move right side to the next room with the Rat that guard the tools box click the rat to say you need to trap it, move the bucket to table then go left into the next room grab the spoon, peanut butler before you leave click on the switch to reveal ( Who killed Jesus) with the answer (LCOTEV), now return back to the room with the rat equip the spoon put on the table to trap it, to get the hammer/screwdriver.
Go back the condenser that mount to the wall equip the screwdriver open it to grab the cooling tank, move into the middle room and check the crate equip the freezer thing the mc make use to freeze the chain, equip the hammer to break it, equip key to use get the flash light.
Now equip the flash light to enter the 2nd dark hallway find a wood box break it with hammer on the left floor for rare coin, now leave lamp there for now, move forward to the next room and keep moving left to another room to grab the oil can on the floor then return backward once and break the wooden barrel for matches on the floor, leave the scroll there for now, return back into room with the lamp inspect it, use both the oil can, matches then return back to the room with the scroll, inspect it use the matches to reveal for more information. Then move forward to the a main door use the code 72134165 to enter the room, process the sense.
if you are stuck let me know so i can try my best to guide you.