Securement Silo PHI walkthrough – Once Human

Securement Silo PHI is yet another farming spot in Once Human where you can obtain various useful loot. This guide will take you through the Silo, explore the loot locations, and inform you on the best way to beat the boss.

Let’s dive in.

Where is Securement Silo PHI?

Securement Silo PHI is located in Iron River (5117,-6929), near they Greywater Industrial Zone and Greywater Camp. The easiest way to get there is to teleport to Greywater Camp and walk (or drive) from there.

What do you get at Securement Silo PHI?

You’ll get Shoes mods from Securement Silo PHI, and they range from Rare and Epic (on Normal) to Epic and Legendary (Hard and Pro). You’ll also get items from the crates and materials inside, and you’ll also get Energy Links, Stardust Source, and armor mod parts.

You’ll also get Eclipse Cortexes once weekly from the Hard and Pro mode.

How to clear Securement Silo PHI in Once Human

Once you enter the silo, run straight ahead (I never see anything in this first room) and head through the doorway. In this room you’ll find a number of enemies, and more will spawn in as you fight. Clear the room and definitely search with Space Time (Q by default), since there are crates, containers, and materials here.

Try not to step on the black stuff on the floor, as it will drop your sanity.

Enter the next room, which is in the opposite corner of where you entered this room — you’ll have to open the door to go through. Take a left here and watch out if you’re playing on hard, there will be a Gasbag waiting for you.

Head down the hall where you’ll find a few more enemies on Hard and Pro (none on Normal), and collect some goodies on the way. At the end of the hall and to your left is a room with a few more enemies and some crates and materials.

Head back the way you came and go down the next hallway which bends first to the left then to the right. You’ll find some materials and containers here, plus some more enemies. Take care of them and move on.

Just before you enter the next room, there’s more stuff to collect to your right. The next room has more enemies to take care of. When you’re done, look for a room covered in vines, and throw a Molotov at the vines to reach a gear chest behind them.

Grab the access card in the chest in the center of the room, and then make your way to the elevator along the eastern wall, call it, and head down to find the secret boss.

How to beat the secret boss in PHI

When playing on Normal, you’ll only need to deal with a few enemies and a Rainfall Reaper. On Hard, you’ll face a Mother of Life which has a powerful poison attack, but a Long-Acting Activator can negate this. On Pro, the Mother of Life will also spawn Arbiters and gain immunity, so you’ll have to take them out to defeat her.

Anyway, exit the elevator and answer the phone to your left, just as you exit the seepage zone. Go into the room at the end of the hallway, and defeat the enemies that appear.

You could also stay in the room and fight from there to avoid the poison, but the Arbiters will be able to reach you with their attacks, so be on your guard when playing on Pro.

Exit the room via the magical doorway that appears, and claim your rewards, then head back.

Dealing with the rest of Securement Silo PHI

Take the elevator back up and head for the opposite corner of the room, where you’ll find big double doors. Use the control panel and head to the next area where you’ll find another crate, containers, and materials.

When you get to the trains, it’s time for the final boss. First, take out the Nest sacs to spawn the boss, and also take care of any additional enemies around here (there are quite a few, especially on Hard and Pro).

Now simply… fight the boss. And good luck! Try to keep moving and watch out for the Gasbags (not a problem on Normal).

If you’re playing on Hard or Pro, the boss will gain immunity, at which point you’ll have to take out the Nest Sacs again, so try to remember their locations. I usually engage the boss from the top of the yellow train on the far side of the room from where you entered.

From there, one of the sacs will usually spawn near the end of the yellow train (the open cart), and the other will be behind the boss by the red train and shipping containers. He’ll also have a force field at this point, and you’ll have to enter it to finish the job.

And that’s it! Once you’ve defeated the boss, go around the room carefully and use Space Time, there are a lot of containers and crates in here.

When you’re ready for your next challenge, I have a guide on how to clear Securement Silo EX1 for you as well.

If you have any trouble here, I have a full guide on the Shrapnel Build that’ll make you more powerful in Once Human.