What to know
- The puzzle occurs during Episode 5 of the game.
- You must open a locked chemical cabinet to gather tranquilizer ingredients.
- Clues are found on posters matching three specific chemical formulae.
- The final cabinet code required to complete the synthesis is 168.
Finding the right ingredients to create a tranquilizer is a critical moment in Directive 8020. During this segment, Anders is tasked with synthesizing diazepam to calm a situation, but the necessary chemicals are locked safely away.
| Puzzle detail | Information |
|---|---|
| Episode | Episode 5 |
| Objective | Synthesize diazepam |
| Required code | 168 |
| Key chemicals | Chloroacetyl chloride, ammonia, dimethyl sulphate |
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Image credit: Supermassive Games / YouTube – 100% Guides
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Image credit: Supermassive Games / YouTube – 100% Guides
Matching the formulae to the laboratory posters
Before interacting with the locked cabinet, you must determine which chemicals are required for the mixture. The synthesis terminal situated to the left of the chemical cabinet lays out the three specific formulae needed to create the tranquilizer.
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Image credit: Supermassive Games / YouTube – 100% Guides
Once you know what to look for, you must explore the room to find three distinct educational posters. Each poster provides the name of a chemical and assigns a specific number to it. By cross referencing the formulae on the terminal with the numbers on the posters, you can quickly deduce the correct combination.
How to solve the diazepam synthesis puzzle
Step 1
Examine the synthesis screen on the terminal located to the left of the chemical cabinet to identify the three required chemical formulae.
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Image credit: Supermassive Games / YouTube – 100% Guides
Step 2
Search the walls of the medical laboratory to locate three separate posters, each detailing a specific chemical and its corresponding number.
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Image credit: Supermassive Games / YouTube – 100% Guides
Step 3
Match the required formulae to the posters to discover that chloroacetyl chloride corresponds to the number 1, ammonia corresponds to the number 6, and dimethyl sulphate corresponds to the number 8.
Step 4
Walk over to the locked chemical cabinet, interact with the keypad, and enter the code 168 to unlock the door.
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Image credit: Supermassive Games / YouTube – 100% Guides
Step 5
Retrieve the chemical ingredients from inside the cabinet to allow Anders to synthesize the diazepam and continue the story.
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Image credit: Supermassive Games / YouTube – 100% Guides
| Task | Reward |
|---|---|
| Entering code 168 | Unlocks the chemical cabinet |
| Gathering ingredients | Allows Anders to synthesize the tranquilizer |
| Completing the puzzle | Advances the narrative progression in Episode 5 |
Once the cabinet is unlocked and the ingredients are secured, Anders successfully synthesizes the diazepam required for the crew. Completing this puzzle not only pushes the narrative forward but also highlights the focus of the game on environmental storytelling and observation. With the tranquilizer in hand, you are ready to face the immediate consequences and subsequent challenges waiting in the next phase of the storyline.
