Trying to make it through Directive 8020 and stuck at a keypad lock? No problem. We’ll show you every code, where to find it, and how to solve each puzzle.
In Directive 8020, you’ll repeatedly come across locked terminals, cabinets, and systems that can only be opened with a code. There are six fixed codes in total, plus one serial number, spread across multiple episodes. They stay the same in every playthrough, which makes them especially useful if you’re hunting secrets or aiming for a clean run.
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To keep you from wandering around aimlessly or missing important clues in the heat of the moment, this guide explains where to find every code, how each puzzle works, and what you should pay close attention to. We’ll start with a quick list of all codes, then break down the puzzles, and finally wrap up with a few helpful tips in case you want to track them down yourself.
Quick & Compact: All Codes in Directive 8020
- Locker (Locker Room): 13576
- Carter’s PC: 2808 / 0828
- Food Storage: 0402
- Chemistry Puzzle (Diazepam): 168
- Anomaly Log: 3196
- Charybdis Probe Serial Number: 2540
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All Codes in Episode 2
Locker Code in the Locker Room
- Note: This is an optional puzzle that rewards you with a secret, but it is not required for the story.
Location: On a locker keypad in the locker room near the atrium.
How to find the code: Leave the locker room and head back into the atrium, then take the stairs up. Use your tool to open a window and enter the room behind it. Inside, you’ll find several secrets and a security camera. Use the camera and you’ll see the code on a display: 13576.
Carter’s PC Code
Location: The PC in Carter’s cabin.
How to solve the puzzle: First, look at the Post-it note on Carter’s monitor, which says “Luna’s.” Then go to the lounge and inspect the calendar there. It contains the entry “Luna’s Birthday – August 28.” The date 28/08 gives you the code 2808; read in US date format, it becomes 0828. Both versions work.
All Codes in Episode 3
Food Storage Code
- Note: This is an optional puzzle that rewards you with a secret, but it is not required for the story.
Location: Food Storage in the kitchen.
How to find it: In the Mess Hall, look for a door you can open with your tool and enter the small side room behind it. When you leave the room again, turn back toward the door and look at the doorframe. The code is written there: 0402
All Codes in Episode 5
Diazepam Code
Location: Chemical cabinet in the lab.
How the puzzle works: First, look at the Diazepam display, which shows three chemical structures. Then find the matching posters around the room and match the structures to the correct substances:
- Chloroacetyl chloride corresponds to 1
- Ammonia corresponds to 6
- Dimethyl sulfate corresponds to 8
Put those three numbers together in that exact order, and you get the code 168.

Anomaly Log Code
Location: Terminal on the bridge.
How to solve the puzzle: Go to the cockpit and look for a note on the consoles to the left that says “CAIF.” Then convert each letter into its position in the alphabet: C is 3, A is 1, I is 9, and F is 6. Put together, that gives you the code 3196.
All Codes in Episode 7
Charybdis Probe Serial Number
Location: Probe on Tau Ceti f.
How to find the code: First, inspect the front of the probe. There, you’ll find the first number: 2. Then move around to the back, where you can read the final two digits: 40. That gives you the pattern 2_40, but the middle digit is missing and is not revealed directly in the game.
The correct combination is 2540. Since the missing digit can only be a number from 0 to 9, you can also figure it out easily through trial and error.
Tips for Finding Codes in Directive 8020
Always look closely, because many codes are written directly somewhere in the room — on notes, doorframes, or monitors. Think logically: Dates, the alphabet, and chemical symbols are often the key to cracking a puzzle.
For more complex puzzles, such as the Diazepam code, it’s worth taking screenshots so you can compare the individual clues without pressure. As a rule, rooms and distant clues are often connected, so use both perspectives and don’t just search the room with the keypad, but nearby areas as well.
And don’t panic if you make a mistake: Most codes do not punish incorrect entries, so you can safely try different combinations at your own pace.
- Continue here: Want to know which actors play the characters? Here’s the full cast of Directive 8020
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