Inhibitors are syringes found inside GRE containers, with each container holding one, two, or three inhibitors. This guide will take you through the fastest route to collect all 43 inhibitors in Old Villedor, from the easiest to the most challenging locations.

General Tips Before You Begin

• Prioritize stamina upgrades until reaching 300 or at least 280 points.
• Unlock Far Jump and Tic Tac parkour abilities early, as they are essential for accessing certain inhibitors.
• Many inhibitors require nighttime exploration, so ensure you have immunity boosters before heading into dark zones.

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1. Main Story-Related Inhibitors

• First Six Inhibitors
  • Hakon saves you and provides the first inhibitors.
  • The St. Joseph’s Hospital mission forces you to collect three more.
  • The game mandates spending these on stamina.

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2. Open World Inhibitors (Easier to Obtain)

Houndfield & Trinity

1. Houndfield (Red House Container) – Hop onto the container, open the hatch.
2. Safe House (South of Red House) – Inside a safe; code 101.
3. Electrical Station (South Houndfield) – Underwater crate.
4. Quarry End (District Edge) – Underground entrance; sneaking recommended.
5. Trinity (Large Windmill) – Enter through the window.
6. Biomarker Side Quest – Solve the safe’s riddle (code 973) for an inhibitor.
7. Northern Trinity (Balcony Entrance) – Enter the building at night.
8. Eastern Trinity (Forsaken Store) – Drop down and enter via a window.
9. Quest: The Only Way Out – Found near Maya’s location.

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3. GRE Anomalies (Must Be Done at Night)

• Defeat Revenants to unlock inhibitor crates.
• Locations:
  • Trinity
  • Quarry End
  • Houndfield (Level 4 Revenant)

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4. GRE Buildings (Immunity Boosters Recommended)

• Horseshoe GRE Building
  • Follow the yellow cord inside.
  • Crates per floor: 1, 1, 2 inhibitors.
• Houndfield GRE Building
  • Climb to the top, enter, follow yellow cord.
  • Crates per floor: 1, 1, 2 inhibitors.
  • A special gunfight occurs before the final crate.

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5. Military Airdrops (Requires Far Jump & Tic Tac)

• Climb three pipes and use Tic Tac ability to reach the crate.

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6. Story-Based Inhibitors (Choice-Dependent)

• Water Tower Mission – An inhibitor is easy to find while climbing.
• Revolution (Survivor Route) – Found in Alberto’s Hideout.
• PK Route Alternative – Located in a different area during the Revolution mission.

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7. Central Loop Connection (Final Inhibitor)

• After reaching the Central Loop, fast travel back to Old Villedor.
• Activate Houndfield Metro Station at night for the final inhibitor.
• Requires activating four generators and fighting volatiles.

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Final Notes

• These inhibitors significantly boost health, stamina, and immunity.
• Story progress unlocks some inhibitors, so ensure you complete main quests.
• Prioritize stamina upgrades early on for better parkour performance.
• If you’re finding volatiles tough, wait until you have strong weapons and boosters.

With this guide, you should be able to collect all 43 inhibitors in Old Villedor efficiently. Happy hunting!