All Codes For The Secret Door

This guide will show you all of the possible four digit codes for the secret door in The Depths.

What Is The Door?

The Door Is a door lol. but for real, It's a door that requires a four digit code to enter it. These codes are scattered all throughout the game, and upon entering one, the door will open to show you something different depending on the code. You also get some loot!
You kinda just have to remember the codes you saw while playing, and if you don't remember them... well, you're screwed. Luckily for you, I have all of them in this guide.

Making Your Way To The Door

The secret door is located on the level The Depths. You will not be able to go there until you have the quest Shrewd Shrews. This is where it's located on the world map:

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Once you enter the level, you are just gonna make your way through the level like normal until you go down a massive elevator. Once you come out of the elevator, the location should look like this and you want to take a left here:

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Keep going left until you see this building that I'm aiming at:

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Go up the set of stairs and enter the door. You should now be in the room where you enter the four digit codes. It looks like this:

Codes

1 2 3 4

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0 4 5 1

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2 1 3 7

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3 1 2 5

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1 9 2 0

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0 3 1 6

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2 0 1 9

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1 2 2 4

Conclusion

These are all of the codes that are currently known. I will update this in the future If anymore are found. If you found this guide helpful at all or you just learned something new, please leave a like and if you are feeling generous go ahead favorite the guide and if you are feeling even MORE generous and sweet, then go ahead and drop an award. FiggleDude aka FiggleJizz aka Grill out!

Huge thanks to @Erico360 and @Zのmbii- for the new codes!

MOUSE P.I. For Hire door codes

More FiggleJizz content:
https://youtu.be/1nxNIbD-Rhc

[ELmagnificoishere]

Dubs

[Eat Grass Smoke Ass]

there's no way to collect the glowing quest-item-looking items in the dev room and jack's office, right? The dev room has a note on the board and jack's office has a hat in his bedroom and a piece of evidence on the evidence board, and if they're collectable clue items or something I don't want to miss them.

[SpaceCataz]

There has to be a code from the keycard right?

[Just regular old Kyle]

Were are the codes in the game?

[LowBudgetKnight]

"Bring us the shrew and wipe away the debt." - first thought when i entered the 1920 code

[Shining Phoenix]

0451 is a callback to the novel "Fahrenheit 451", and was the code to enter the offices at Looking Glass Studio (System Shock developers).

[Sylvain 64]

The 1224 code also makes spawn ptich black 3D mouse behind you

[Grill]

@Carry Toggler most of the codes are found either on a piece of paper around the game, not just on that level, or etched into a wall somewhere. I'm not entirely sure if that's the case for all of them though.

[Carry Toggler]

@nicky grimes , no its a reference to system shock. in bioshock its also a reference, this code is a classic... op can you give details why the codes you did work ? i assumed 1234, since i saw that before in an elevator, 3125 was in that level and i tried 0451 cause... you know... it was weird that 1337 did not work. can u give explanation on why the ones you found work ?

[Grill]

yes I noticed the black mouse figure too. I was gonna put it in this guide but I figured I wouldn't spoil.