Securement Silo PSI in Once Human can be found in the Red Sands region. Read on to learn more about Securement Silo PSI including its location, recommended level, secret room or seepage zone, as well as a walkthrough, and the rewards you earn for completing it.

Securement Silo PSI Location and Recommended Level

Located in the Red Sands Region

Manibus / Evolution's Call	Prismverse's Clash
Recommended Level
・Normal: Lv. 45 (1 Player) ・Hard: Lv. 50 (3 Players) ・Pro: Lv. 60 (4 Players)	・Normal: Lv. 35 (1 Player) ・Hard: Lv. 50 (3 Players) ・Pro: Lv. 60 (4 Players)

Securement Silo PSI is nestled in the Red Sands region, close to the borders of Chalk Peak. If you're navigating the map, you'll find it south of Forsaken Monolith and the 73 Source Extraction Point, and northeast of Evergreen Vineyard.

The coordinates for Securement Silo PSI are 2489, -2568 in the Red Sands region. Be sure you're at the right level before tackling Securement Silo PSI — heading in unprepared could lead to a quick and painful defeat!

Red Sands Region Guide

Securement Silo PSI Walkthrough

Securement Silo PSI Objectives

Securement Silo PSI Objectives
Head Left and Glide to the Bottom Defeat the Rosetta in the First Room Defeat More Rosetta and Loot the Storage Crates Go Through the Cavern Clear the Large Room and Loot the Gear Crate Head Right, Dodge Lasers for Gear Crate Defeat the Boss: Empty House

1. Head Left and Glide to the Bottom

Upon entering Securement Silo PSI, you'll find yourself on a walkway. Head left and take the plunge — jump down from the walkway and glide all the way to the bottom to proceed.

2. Defeat the Rosetta in the First Room

Continue through the Silo until you encounter Rosetta soldiers. Be prepared for a fight, as some of them are snipers. Stay alert and take them down swiftly but carefully!

Once you've defeated the Rosetta soldiers, make your way up the stairs

3. Defeat More Rosetta and Loot the Storage Crates

When you get to the next room, you'll find a wider space filled with more Rosetta soldiers. Watch out for the Rosetta drones, as they can stun you with electricity for a few seconds, leaving you vulnerable to the snipers positioned at the back. Once you've taken them down, be sure to loot all the storage crates to find a Rosetta V3 Access Card!

Make your way to the door and interact with the control panel to continue onward.

4. Go Through the Cavern

You’ll enter a large cavern with a watery walkway, where many Rosetta enemies are waiting.

Pro Tip: If you have a sniper rifle, take advantage of the vantage point near the entrance to pick off the Rosetta enemies from a distance!

Take your time to defeat them and loot all the storage crates you can find before heading into the hallway.

5. Clear the Large Room and Loot the Gear Crate

You’ll find yourself in another large room filled with Rosetta soldiers. Use cover to your advantage as you take them down. Go forward and then head left until you discover a doorway that leads to a kitchen. There are more enemies waiting here.

Don't forget to check the open doorway on the left, which leads to a room containing a Gear Crate—make sure to loot it!

Next, interact with the Access Door Control to the right of the kitchen to open the doors and advance to the next area.

6. Head Right, Dodge Lasers for Gear Crate

The path splits here—head right and be careful while navigating through the lasers, as getting hit will cause significant damage. Patience is key here! After looting the Gear Crate, investigate the nearby contraption to deactivate the laser traps, giving you a safer route back.

Now head back and take the unexplored path. Dodge another set of laser traps and interact with the console to open the door.

7. Defeat the Boss: Empty House

You’ll come across a fridge, unassumingly perched atop a small frozen hill. Don’t be fooled—it’s actually the boss: the Empty House! This boss has a massive amount of HP and will take some time to bring down.

The Empty House will start hurling giant icy spears at you, dealing Area-of-Effect damage. Make sure to dodge them to avoid getting hit!

Deal With the Unfrozen Rosetta

Frozen Rosetta soldiers are scattered around the area, and the Empty House will occasionally unfreeze them. While you can ignore them early on, as their numbers grow, they’ll begin to deal significant damage. Later in the fight, the boss will even start unfreezing elite Rosetta units, making the battle more challenging.

Destroy the Generator Shields with Ice Spikes

As you deplete the Empty House's shield, it will eventually become immune to damage. To overcome this, you'll need to destroy the generator shields and cut its power.

Look for ice spikes lying around; you can press F to levitate them and hurl them at the shields before severing its connection to the generators with your guns. The generators are located on the left and right sides of the boss area—just follow the glowing wires!

Once you've severed its connection to the generators, you can continue to whittle down the Empty House’s health until it’s finally destroyed!

Securement Silo PSI Secret Room (Seepage Zone)

No Secret Room or Seepage Zone

Unlike the other Securement Silos, Securement Silo PSI has no secret room or Seepage Zone.

Securement Silo PSI Rewards

List of Rewards

Securement Silo PSI Details

Securement Silo PSI Info

Recommended Level (Manibus and Evolution's Call)	Normal: Lv. 45 (1 Player) Hard: Lv. 50 (3 Players) Pro: Lv. 60 (4 Players)
Recommended Level (Prismverse's Clash)	Normal: Lv. 35 (1 Player) Hard: Lv. 50 (3 Players) Pro: Lv. 60 (4 Players)
Region	Red Sands
Boss	Empty House
Rewards	・Pants Mods ・Stardust Source ・Energy Link ・Armor Mod Parts ・Weapon / Armor ・Eclipse Cortex Lv. 3 (Hard and Pro Mode)
Deviant	・N/A
Secret Room / Seepage Area?	No

Once Human Related Guides

All Securement Silo Guides

All Securement Silos

All Way of Winter Securement Silos

All Way of Winter Securement Silos