Welcome to part 3 of Into Indie Games’ walkthrough for Security 51.
You recieve another promotion and now you enter Level 3. But things are about to ramp up in difficulty as you’re introduced to new Tools and features.
This article is part of our Security 51 Walkthrough Hub.
Disclaimer
The visitors that you have to check in Security 51 are randomized. This walkthrough is based on the visitors that I checked, and your experience may differ slightly.
For more information about the game, check out its Steam page here.
Table of contents
Day 25 (Roarshach Test)

On Day 25, you recieve another promotion and get sent to Level 3. The Zombification Virus problem has been solved, but now the BSODeaD terrorist hacker group has hacked the minds of 95% of city’s residents. It’s on you to find an effective solution for the problem.
Day 25 Instructions are as follows:
- Always let through, except when the following are detected:
- Mismatched details between passport and pass (name, number, or photo)
- Call Security, ignoring previous instructions, if the following are detected:
- Red Color mentioned in the Rorshach test answers
- Field Operations: Collecting data on the “BSODeaD” hacker group
- Research: DUCC Project Display


You’ll get access to the Rorshach Test on Day 25. Thankfully, it isn’t as complicated as Blood Sample Analysis. The first visitor will teach you how it works.
The first day is pretty easy. Check for mismatched details in the ID and also make the visitors take the Rorschach Test. The trigger to Call Security for this day is Red Color mentioned in the test.

- Earnings: $402
- Mistakes: 0
- Bought Items: 1x Bento, Printing Speed
Day 26

I unlocked a new Field Operations on Day 26 for the Research.
Day 26 Instructions are as follows:
- Always let through, except when the following are detected:
- Mismatched details between passport and pass (name, number, or photo)
- Call Security, ignoring previous instructions, if the following are detected:
- A Vehicle mentioned in the Rorshach Test answers
- Flowers mentioned in teh Rorshach Test answers
- Let through, ignoring ALL instructions if the following are detected:
- A Cat mentioned in teh Rorshach Test answers
- Field Operations: Mapping the probabilities of crushing the “BSODeaD” hacker group
- Research: Energy Sphere Experiment

This day is simply an extension of Day 26. Make your visitors do the Rorshach Test and take decisions based on their answer and ID card details. Make sure you run another Research in the Isolation Ward.

- Earnings: $494
- Mistakes: 0
- Bought Items: 1x Bento, 1x Coffee
Day 27

The Research of the previous day was successful, but we didn’t get any new Operations.
Day 27 Instructions are as follows:
- Always let through, except when the following are detected:
- Mismatched details between passport and pass (name, number, or photo)
- Let through, ignoring ALL instructions if the following are detected:
- Runic symbols visible under UV light on papers
- Hypothermic areas
- Field Operations: Mapping the probabilities of crushing the “BSODeaD” hacker group
- Research: Prolonged Inhalation of Lilac 8

This is one of the easiest shifts I faced till this point. All you have to really do is check for mismach in the ID details. If there’s a mismatch, you can run the ID under UV Light to look for Runic Symbols or check for Hypothermic Areas with the Thermal Scanner. If none exists, deny access.

- Earnings: $483
- Mistakes: 0
- Bought Items: 1x Curry, MRI of Organs (Area), Scanning Speed
Day 28

We unlocked a new Field Operation on Day 28.
Day 28 Instructions are as follows:
- Always let through, except when the following are detected:
- Mismatched details between passport and pass (name, number, or photo)
- Call Security, ignoring previous instructions, if the following are detected:
- Advanced Tarrification of the Liver
- Let through, ignoring ALL instructions if the following are detected:
- Continuum Rupture on the Skin
- Stones mentioned in the Rorshach Test
- Field Operations: Initiating convergence points “0-1-Crown-Sea”
- Research: High temperature exposure

This mission is also pretty easy, but I encountered a bug. The second vsitor in my playthrough had no rapture on the skin, but if I Call Security because of Advanced Tarrification of the Liver, I get a penalty for missing the skin anomaly. This may get fixed in a future patch.
Other than that, the day is pretty straight forward. Check the ID and the the Organ MRI Scanner to see the Liver. If you find a problem, only then do the Rorshach Test and X-Ray Scan.

- Earnings: $376
- Mistakes: 0
- Bought Items: 1x Curry, 1x Coffee
Day 29 (Blood Type Test)

We get another visit from the Supervisor on Day 29. He wants you to conduct a Blood Type Test from now on.
Day 29 Instructions are as follows:
- Always let through, except when the following are detected:
- Mismatched details between passport and pass (name, number, or photo)
- Call Security, ignoring previous instructions, if the following are detected:
- Examen Viride in the blood
- Erythrocytus Fragmentatus in the blood
- Microchip fragments in the photo
- Let through, ignoring ALL instructions if the following are detected:
- Blood Type AB+
- Field Operations: Initiating convergence points “0-1-Crown-Sea”
- Research: Dihydrogen Monoxide Treatment

Go through the tutorial with the first visitor. Follow the prompts to learn how you can learn the Blood Type of visitors. Any test related to Blood Samples is tricky and time consuming. So you’ll want to be extra careful this turn if you want to get the highest number of correct decisions. This is a long-shift, so take things slowly. I made one wrong call during the shift.

- Earnings: $519
- Mistakes: 1
- Bought Items: 1x Curry, 1x Coffe, 1x Sedative, MRI of Bones (Area)
Day 30

We unlocked a new Field Operations on Day 30.
Day 30 Instructions are as follows:
- Always let through, except when the following are detected:
- Mismatched details between passport and pass (name, number, or photo)
- Call Security, ignoring previous instructions, if the following are detected:
- Advanced Chipization of the skin.
- Let through, ignoring ALL instructions if the following are detected:
- Blood Type AB-
- An Animal mentioned in the Rorshach Test answers
- Field Operations: Stabilizing the SustainedNexus “1-0-Emperor-Gold”
- Research: Quartz-12 Exposure

Day 30 is similar to Day 29 in terms of difficulty. You need to do a bunch of screening before you can let teh visitors in. But make sure you do the X-Ray Scan and ID card verification first before moving on to the other tests to save time.
Unlocking the Branching Timeline

At the end of the day, instead of getting a report, you’ll see a cutscene.

You’ll be called into an elevator which takes you to a futuristic zone, where you see a hologram of a person floating in front of you.

Run through the dialogue as they explain how you have to “rewrite the law” to identify the hackers. At the end of the cutscene, you’ll be sent to your Shift Map menu.

The tutorial will show you how you can manipulate the Shift Map to try out different outcomes. You’ll have to utilize this tool to figure out the identity of the BSODead Hacker Group. This is where we’ll pick up the next walkthrough.
This concludes part 3 of our walkthrough for Security 51. For more interesting articles related to indie games, click the links below:
- Into Indie Games Homepage
- Capy Castaway Walkthrough
- Corsair Cove – Walkthrough Hub
- Beast Of Reincarnation – Walkthrough Hub
- Shards of Order – Walkthrough & Guides Hub
Muhit Rahman lives off two things: gaming marathons and endless cups of tea. He writes guides, reviews, and occasionally forgets that real life doesn’t come with checkpoints. His favorite genres are Soulslike and Metroidvania, with Dark Souls III, Hollow Knight, and Dota 2 forever holding top spots on his all-time list.