
In the game Atomfall, players encounter a variety of puzzles, one of the earliest being located at the entrance of Data Storeroom C. This storeroom is situated in the Interchange’s Data Store Charlie. Upon arrival, you’ll find a locked door accompanied by a scientist’s corpse that holds the Data Storeroom C Key. However, acquiring this key alone will not grant you access; you must also decode the mechanism that powers the door’s lock.
Unlike traditional game mechanics where codes might be conveniently noted, Atomfall requires players to engage in a process of deduction and experimentation to find the code. This makes it quite easy to overlook the storeroom and the valuable items hidden within. To streamline your experience, we’ve outlined the steps necessary to unlock Data Storeroom C.
Unlocking Data Storeroom C: Finding the Code
Data Storeroom C is located just below the area where you input the Atomic Battery in Data Store Charlie. This is predominantly the first Data Store you will access in the game.
Upon approaching the storeroom’s entrance, you’re greeted by the lifeless body of a scientist. Your immediate action should be to search this body for the Storeroom C Key. Although this key is crucial, the door remains inaccessible until you restore power to its locking mechanism.

Next, focus on the towering server units surrounding you. Each tower features a selection of numbered buttons. Notably, the game does not provide hints regarding the correct code. Instead, you’ll need to rely on trial and error to deduce the combination.
While this might seem daunting, the process is facilitated by auditory and visual feedback from the towers. For instance, the first digit of the code is 5. When you successfully press the correct button, the tower emits a sound and lights up. Continue pressing subsequent buttons until you encounter another that replicates this feedback. Should you press an incorrect button, simply restart by pressing 5 along with any other digits you’ve already confirmed.
If you prefer to bypass the manual trial and error, the code to unlock the storeroom is 5742 (reveal the spoiler for the details).
Upon successfully entering the code, power will be restored to the storeroom door, allowing you to utilize the key obtained from the scientist to unlock it.

Inside Data Storeroom C, you will uncover a range of supplies including ammunition, bandages, Training Stimulants, and a recipe for creating a Poison Bomb.
For additional insights and tips on Atomfall, consider exploring where to find the Church Cellar Key, locate all Atomic Batteries, and discover all Skill Manuals in the game.
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