Two blue storage containers with glowing lights in a dim warehouse hall, a walkway above and a round Rollerboi robot behind them, in The Last Caretaker, from the Update 5.5 press kit.
Guides

Quests

The Last Caretaker The Warehouse Quest: Central Warehouse Alpha and Its Secret Room

Short answer: Go to Central Warehouse Alpha, the dock just south of the Lazarus Complex (about 66, 22 on the map). Clear the robots, get up to the office above the warehouse floor, pull the wall locker aside by its orange grab handle and go through the hidden door behind it. The search ends in that small room, and the quest gives 1,000 XP and 25 Enhancer Points.

Game version: Early Access, Update 6; the quest is checked in Update 5.5 recordings and the Update 6 game data

Where It Is and How It Starts

Where is Central Warehouse Alpha?

Central Warehouse Alpha is a dock with a big warehouse and a small utility shack, just south of the Lazarus Complex, at about 66, 22 on the map.

The navigation uplink above Lazarus Complex reveals Central Warehouse Alpha on the map.

See also: Central Warehouse Alpha on the map · Lazarus Complex

How do you start The Warehouse quest?

The quest panel reads “Enter the Warehouse and discover what secrets it hides”, with one task: “Search the Warehouse and discover what secrets it hides.”

Nobody hands it to you: it turns up in your quest list as you approach the warehouse.

Not confirmed yet

The release-build listing adds a first task, “Find a way into the Warehouse”, before the search.

Not confirmed yet

See also: every quest in order

Finding the Secret

Where is the warehouse secret?

The secret is in an office above the warehouse floor. Find the wall locker with an orange grab handle and pull it aside: a hidden door is behind it, and the small room past that door is where the search ends.

The wiki puts that office on the left as you enter the main hall. Not confirmed yet: first power the area, fill a machine with Petrol and park it as a step, then climb a ladder and jump across to the office.

Not confirmed yet

On the desk inside lies a map; reading it ticks off the quest, and the Caretaker’s companion says it marks dozens of sites, maybe hundreds. The room also has Continental Reserve Notes to loot.

Not confirmed yet

See also: where to get Petrol

What enemies are at the warehouse?

Rollerbois, Laser Bobs and Angels guard the docks and the hall, so come armed and ready to fight more than one at a time.

The release-build listing counts eight Rollerbois, three Angels and two Laser Bobs here, plus swarms and egg sacks.

Not confirmed yet

See also: combat guide

Reward

What does The Warehouse quest give?

1,000 XP and 25 Enhancer Points.

The wiki also lists the Brass Telescope as unlocked in the Skills menu; that is not confirmed yet.

Not confirmed yet

See also: what to spend Enhancer Points on

More at Central Warehouse Alpha

What is under the warehouse?

Under the warehouse, near the big grinder, a new door leads into an old logistics facility. Go through it and the MOSES Field Reserve Program quest starts on its own.

Update 5.5 added MOSES Field Reserve Program at Warehouse Alpha.

See also: MOSES Field Reserve Program walkthrough

Where are the blueprints near the warehouse?

The blueprints at Warehouse Alpha are the Bulk and Barrel prototypes. They hang as blue holograms in the prototype storage room of that facility, and scanning both with the Replica Scanner unlocks the Bulk container and Barrel blueprints.

See also: every blueprint to scan, as a checklist · how to use the Replica Scanner

Is there a QR code in the warehouse?

A code inside an air duct says “authority”, and there is another “authority” code in the Warehouse ducts above the main hall.

Room 995 appears on the Warehouse PECO interface but has not been found in the building. It may be a PECO puzzle.

Not confirmed yet

Which sample is at Central Warehouse Alpha?

Sample 128, the CS-17 Courier Skimmer, is one of the samples found here.

See also: all samples · the CS-17 Courier Skimmer

Official sources and wiki