The Sinking City 2: Apartment No. 5 Safe Code and Loot

The first locked safe you meet in The Sinking City 2 sits on the kitchen wall of Apartment No. 5, the home of Algernon, inside the building next to the blocked Radio Store. Opening it early gives you healing and ammo before a run of fights, so it is worth clearing before you move on.

Quick answer: Enter 1908 on the wall safe in Apartment No. 5 to open it. The number is the year the Radio Store opened, shown as “Since 1908” on the sign above the store entrance.

Where the safe is located

You reach this area while heading for the Radio Store. Its front door is blocked, so you go through the apartment building beside it instead. Enter the building, climb to the upper floor, and go into Apartment No. 5. The safe is on the wall in the kitchen, with a note attached.

The note is a letter titled “To Martin,” written by Algernon to his son. It says the combination is his “proudest, most miraculous moment.” On its own this tells you nothing usable, so you need a second clue from inside the store.

The To Martin letter open on the Apartment No. 5 safe with the Take prompt shown — The “To Martin” letter attached to the wall safe in Apartment No. 5, hinting at the owner’s proudest moment / Frogwares

How to reach the Radio Store and find the code

Leave Apartment No. 5 and enter Apartment No. 6. Break the barrels blocking the hole in the floor, then drop through to the lower level.

Open the door to the left of the corridor to create a shortcut, then crouch through the hole in the wall on the right. This takes you into the Radio Store.

Read the second letter near the checkout counter at the back of the store. Titled “From A Sister,” it is written by Anna and mentions that it has been twenty-one years since Algernon opened the shop, the same day he met his future wife. This confirms the “proudest moment” is the year the store opened.

The From A Sister letter open with three clue sentences underlined during examination — Anna’s letter in the Radio Store, marking the twenty-one-year clue that points to the store’s opening year. / Frogwares

Go out the front of the store and look at the sign above the entrance. It reads “Since 1908,” which is the exact combination you need. The letters mention the present year of 1929, so subtracting twenty-one years also gives 1908.

Tip: On higher investigation difficulty the key phrases in the letters are not highlighted, so you have to work out the connection yourself. Opening the investigation screen and connecting the “To Martin” and “From A Sister” evidence rewards you and confirms the reasoning.

Enter the code and confirm it worked

Return to Apartment No. 5, interact with the wall safe, and set the four combination wheels to 1908. The safe opens immediately and gives you access to the loot inside. Unlocking it also completes the related investigation and grants a starting achievement tied to the wall safe.

The wall safe with four combination wheels being set to the code — Setting the four combination wheels on the Apartment No. 5 wall safe to 1908. / Frogwares

Note: Be ready for a fight after opening it. An undead enemy attacks as you leave the room, and more monsters appear once you push aside the shelves blocking the store’s front door.

What’s inside the safe

Item	Quantity	Use
Dolorocide Pill	1	Healing item
Handgun Ammo	14	Ammunition for the pistol

The extra handgun ammo matters here because you are about to face several enemies after collecting the fuses from the Radio Store. Aim for the glowing weak spots on the undead to deal more damage and spend less ammo, which is especially useful on harder difficulties.