Embarking on the "Hydro-Puzzle" side quest in Dying Light: The Beast is essential for restoring the city's water supply and securing valuable loot. This mission, which becomes available after completing the main story quest "Power Gambit," tasks you with investigating a critical water pumping station. Our comprehensive guide will walk you through every step, focusing on the crucial objective of locating the hidden safe and the key to the Chief Engineer's Office.
How to Begin the Hydro-Puzzle Quest
The quest triggers automatically after you have activated the first Relay Station located east of the Town Hall. Shortly after this, you will receive a radio call from Pietro, who urgently requests your assistance with a malfunctioning water system. To officially start the quest, you must travel to the Old Villa district and speak with Pietro directly. He will direct you to the source of the problem: the Water Pumping Station, marking your next destination on the map.
Locating the Water Repairs Facility Safe and Office Key
Your primary goal is to infiltrate the Water Repairs Facility. The main entrance may be blocked, so look for alternate routes. The most reliable path is to scale the scaffolding on the building's exterior to reach the rooftop terrace. From there, locate a large ventilation shaft wide enough to crawl through; this will provide access to the facility's interior.
Once inside, be prepared for a hostile environment. The corridors are typically dark and infested with infected. Clear the area cautiously as you navigate deeper into the building. Your target is a small, cluttered office room that houses a prominent safe.
This safe is locked with a three-number combination. The code you need to input is 27 - 1 - 15.
Rewards Inside the Safe
Upon successfully opening the safe, you will be rewarded with two critical items:
Chief Engineer's Office Key: This key is essential for progressing further into the facility and completing the Hydro-Puzzle objectives.Valuable Loot: You will find a high-tier reward inside, such as a Military Medkit, which is incredibly useful for surviving the challenges ahead.
Pro Tip: The area surrounding the office is often swarming with zombies. Beforeattempting to open the safe, ensure you have ample ammunition and apowerful weapon equipped to defend yourself against sudden attacks. With the key in hand, you can now proceed to unlock the Chief Engineer'sOffice and work towards solving the water pressure puzzle to completethe quest.
By following these steps, you will efficiently navigate the Hydro-Puzzle quest's dangers and claim your well-earned rewards.
Release date: September 19, 2025
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