The First Biomarker is a Side Mission (Side Quest) in Dying Light 2. This walkthrough will guide you through all objectives of the The First Biomarker side mission.
Quest Giver: McGregor
Requirement: Complete Main Quest “Markers of Plague” and activate ‘Alder’ Windmill
Reward: Inhibitor, Confidential Notice to GRE Personnel (Memento), Safe Code – A note from Dr. Katsumi containing a riddle (Memento)
Mission Info: McGregor claimed that he had invented a biomarker that made humans faster and stronger. I wanted one, so I agreed to solve some riddles that revealed the code to safe.
- Find the First Biomarker
- Bring back the First Biomarker
Starting Location: The First Biomarker
The First Biomarker is a side quest in Trinity that can be started by talking to McGregor at the Trading Post west of ‘Alder’ Windmill after completing the Main Quest “Markers of Plague” and activating ‘Alder’ Windmill.
Find the First Biomarker
Head to the Saint Joseph Hospital just north of you and enter it through the bus, like you did in “Markers of Plague”.
Climb up the lights and around the building to reach Dr. Katsumi’s office with the safe.
Input the following code to unlock it: 973, and then grab the First Biomarker.
Bring back the First Biomarker
After killing a few infected that spawn behind you, return to McGregor.
This finishes The First Biomarker Side Quest in Dying Light 2 Stay Human.
For all other Side Quests and Main Missions, check out the complete Dying Light 2 Walkthrough.