Overview
Chapter 1 transitions from the ashen streets to interior spaces where the infection's true nature starts to emerge. This guide ensures you:
- Collect every **file**
- Pick up all key **ammo and upgrades**
- Reach the chapter's end in a strong position
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Section 1 – From Cathedral to Quarantine Zone Gate
1. After the prologue, exit the cathedral grounds.
2. Move down the main avenue:
- Use environmental kill opportunities (explosive barrels).
- Practice **stagger → knife** to save ammo.
Secret: A corpse slumped against a pharmacy door has a locker key in its coat, easily missed if you sprint.
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Section 2 – First Quarantine Checkpoint
1. The checkpoint has:
- A control booth
- A barricaded side office
2. Before triggering the alarm:
- Loot the side office using the **locker key**.
- Grab:
- **Handgun Upgrade – Extended Mag**
- File: **Checkpoint Doctor's Note**
Once you flip the power, a small horde spawns—kite them around cars and use environmental hazards.
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Section 3 – Apartment Block Sweep
1. The game funnels you into a multi-story apartment building.
2. Clear floor by floor:
- Save shotgun ammo for tight hallway ambushes.
- Open every wardrobe; some hide **Green/Red Herbs**.
Secret File: In a child's bedroom, under a loose floorboard, is "Choir Journal – Day 0", which hints that the infection may have started as a "treatment" for anxiety.
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Section 4 – Rooftop Escape and End of Chapter
1. Climb to the rooftop while sirens wail below.
2. Final encounter:
- A mini-boss variant with hardened ash plating.
- Aim for exposed **joint weak points**.
3. Once defeated, you zipline to the next area, triggering the chapter end.
Completing Chapter 1 this way nets you strong early resources, key lore files, and a clear picture of how the infection spread from art and medicine into full-blown catastrophe.