Walkthrough for the mission Hunting Zero-Day in the game Watch Dogs: Legion. This page covers all main objectives, key steps, or helpful tips to guide you through the mission smoothly. Whenever possible, the guide points out locations for key items and details interactions with NPCs, among other tips. To ensure maximum clarity, in-game screenshots are included for easy-to-follow visual guidance.
Quest Group: Main Missions
Type: SIRS Mission
Prerequisites: To play this mission, you must first complete the mission Honey Trap.
This mission will start when you manage to seduce the SIRS whistleblower and get his biometric data, that is, after completing the mission "Honey Trap".
Richard Malik, a SIRS whistleblower, asked for DedSec's help unmasking a rogue officer he believes is the leader of Zero-Day. He's just made a breakthrough.
Go to Westminster Abbey and meet with him.
Westminster Abbey
London
MI-6 Building
London
The Ascent
London
Go to Westminster Abbey and sit on the bench to wait for Malik.
Malik will tell you that he thinks the leader of Zero Day is Emma Child, the head of SIRS counterterrorism and his friend.
Richard Malik believes that his former mentor Emma Child is the leader of Zero-Day, a faction of rogue spies plotting to take over the government. Provoke her into meeting with her closest lieutenants by hacking her case server at MI:6.
Go to MI-6 Building. File Server is in the basement. The first thing you should do is to get the key to the room with the terminal you need to access. You can get this key from one of the guards patrolling the lower floor of the building. You can download it remotely, using the security camera.
You have to physically access the terminal and there are different ways to do this. You can do it in person, or you can use your spiderbot. A lot of things can also go wrong so below I'll describe how it worked for me.
Note: If you use a spiderbot, remember that the moment you start downloading data your main character can also be detected by the guards and can be attacked.
Use the security cameras and start by activating as many traps as you can to get rid of as many guards patrolling the building as possible.
You can access the building from both the river side and the main entrance. This time I chose the second option. Using the security camera, I activated the trap and thus got rid of the guard located in the main hall.
Then I threw the spiderbot over the security gates and hid my character behind a flower pot to reduce the possibility of quick detection.
Using spiderbot, I took the staircase on the left downstairs and made my way to the server undetected, activating traps along the way that I couldn't activate using the security cameras.
When you start the download, which will take a while, an alarm will be raised and the guards will start looking for you.
Note: Even if you get rid of all the guards, new ones will appear. If you have eliminated most of them, there is a good chance that neither spiderbot nor your character will be detected quickly and the process will end.
Then you will be able to switch to your main character and leave the dangerous zone. You'll probably have to make a quick run to lose the tail, drones, car patrols, etc.
Before he abandoned the operation, Richard Malik begged DedSec to find smoking gun evidence that his former mentor, Emma Child, really is the leader of Zero-Day, who he believes are a faction of rogue spies trying to take control of the government. DedSec has maneuvered her into a meeting with her top lieutenants at The Ascent. Observe the meeting and find the smoking gun.
Head to The Ascent. The server you need to access is in a locked room located on the terrace at the top of the building. You can get there by climbing two orange pipes. Climb the first one to the middle platform.
First, access the security cameras on the upper level and use them to retrieve the key from the tablet that is there. Use one of the cameras to start the download (it will be too far away) and then switch to another camera that is closer to the tablet so the download progress bar can move forward.
You may or may not get to the highest level personally. It is possible to throw a spiderbot in there and get into the server using it.
After that, all you have to do is switch to another camera and listen to what Emma Child has to say to her teammates.
DedSec might have discovered the identity of Zero-Day's leader: SIRS' counterterrorism director, Emma Child. She's currently driving away in a specialized SIRS vehicle. Get close to her and hack her car's comm to gather more evidence on Zero-Day and clear DedSec's name.
Get in any vehicle and follow Emma's car until the download bar is 100% full.
When this happens, Emma's car, which she is not really in, will explode and you should drive away to safety. This mission will end and the next one will begin - Smoking Gun.
After completing this mission, you will be able to play the mission Smoking Gun.