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Once Human: How To Get Atomic Lighter Deviant

Time to cause some explosions!

Deviants are powerful Entities in the world of Once Human, that can provide you with various benefits and uses. They can help you with your Base and also provide some options in Combat. Once such Deviant is the Atomic Light Deviant.

The Atomic Deviant lighter can be a bit more difficult to obtain than the other ones in Once Human. In this guide, we’ll go through all the steps you need to go through to get it. Without further delay, let’s get into it!

How To Get Atomic Lighter Deviant

To get the Atomic Lighter Deviant in Once Human, you’ll need to go through an entire Dungeon which involves a boss fight. So, we strongly recommend you make sure that your level requirements are up to par in Once Human.

SIDE NOTE: We have a complete guide for all Deviant locations in Once Human, make sure to check it out as well!

With that said, here are the steps you need to follow to get the Atomic Lighter Deviant in Once Human:

  1. Go to the Securement Silo EX1 location on the map
  2. Start the Securement Silo EX1 Dungeon
  3. Progress through the Dungeon
  4. Complete the Puzzle with the red light
  5. Defeat the Sennacherib Boss
  6. Capture the Atomic Lighter Deviant.

Go To Securement Silo EX1

Starting off, you’ll want to head to the right location to get the Atomic Lighter Deviant. You’ll be heading to the Securement Silo EX1 which you can find on the Once Human map. 

We have the location shown below for your convenience. You can find it near the Gaia Military Base and Rotten Saddle.

Securement Silo EX1 on map in Once Human.

Begin Securement Silo EX1 Dungeon

After you get to the location, make your way to the gate of the Securement Silo EX1 Dungeon. Interact with it and you’ll see all the details for the Dungeon in Once Human.

Keep in mind that the Recommended Level for this Dungeon is Level 35. Once you’re ready, begin the dungeon. You’ll be able to capture the Atomic Lighter Deviant towards the end of the Dungeon.

Securement Silo EX1 Enter in Once Human.

Obtain Rosetta V3 Access Card

Progress through the Securement Silo Dungeon EX1 dungeon and defeat the enemies there. Eventually, you’ll go down an elevator to an open room.

Here, you’ll want to clear all the enemies you see. Doing so will spawn a boss at the end known as the Arbiter.

Fighting Arbiter in Once Human.

Kill the Arbiter in Once Human and make sure to loot its body. Doing so will give you the Rosetta V3 Access Card.

Rosetta V3 Access Card loot in Once Human.

Use the Rosetta V3 Access Card at the nearby door panel to unlock it. After that, head inside and open the Weapon Crate that you find at the end. While not strictly necessary, this Weapon Crate does have some great goodies.

Using Rosetta V3 Access Card in Once Human.

Open Shortcut

Return to the large room that you just cleared and check the nearby smaller rooms. You should be able to see a breakable wall there with a prominent black and yellow design.

This shortcut in Once Human will allow you to get to the Atomic Lighter Deviant much faster. To open this shortcut, you’ll need to use a Grenade

Once it breaks open, head into the shortcut and progress through the Dungeon as you did before.

Opening shortcut in Once Human.

Break Wall

Eventually, you’ll come across a hallway that is blocked by a weird looking black slime. You can actually break this wall of slime by shooting the sacks that you see on it in Once Human.

The process is very nasty, but necessary if you want to get that Atomic Lighter Deviant. Once the way is clear, make your way on ahead.

Shooting sacks in Once Human.

Solve Puzzle

Up ahead, you’ll come across a strange looking door that behaves like a portal. This indicates the start of a puzzle that you’ll need to solve to get to the Atomic Lighter Deviant in Once Human.

The puzzle begins when you go through the door. Essentially, you’ll need to make your way to the other end of the area.

Securement Silo EX1 Puzzle Start in Once Human.

However, you should stop moving when the light turns red. If you do move, you’ll be sent all the way back to the start. Keep in mind that you can still shoot during the red light, as long as you remain still.

Puzzle Red Light in Once Human.

Keep progressing through the puzzle in this way until you reach the other end. Here, enter through the door to the final phase of this Dungeon!

There is another confusing puzzle that makes an appearance in the Securement Silo Theta Dungeon. We have the answer to it in our Securement Silo Theta Statue Puzzle Solution Guide.

Finishing puzzle in Once Human.

Defeat Sennacherib Boss

When you enter through the doorway, you’ll arrive in a boss area in Once Human. This is the Sennacherib Boss, which has searchlights on his head.

In order to defeat it, you’ll need to fire at the searchlights on its head. But be warned as the lights will change colors. 

Fighting Sennacherib Boss in Once Human.

When the colors turn red, you should not move. Otherwise, you’ll get frozen and it will deal devastating damage to you.

Again, you can shoot it during the red light as long as you stay still.

A great strategy is to stay behind one of the pillars. This will allow you to be safe even if you do end up moving during the red light and get frozen. Be sure to pop a Sanity Gummy during these moments so you do not lose too much health.

Keep shooting the searchlights and eventually, you’ll be able to defeat it! The Atomic Lighter Deviant is nearly in your hands.

Sennacherib Boss Red Light in Once Human.

Capture Atomic Lighter Deviant

When you defeat the Sennacherib boss, make your way upstairs. Here, you should be able to find the Atomic Lighter Deviant floating around.

Capture it and make sure to keep it in an Isolated Securement Unit at your base in Once Human.

Capturing Atomic Lighter Deviant in Once Human.

How To Use Atomic Lighter Deviant

The description of the Atomic Lighter Deviant in your Inventory can clue you into what this Deviant does. Essentially, it can help provide you with materials that you need for crafting Tactical Items.

Additionally, it also seems to be useful in Combat as you can throw it to create a powerful Explosion. We strongly suggest you experiment with this Deviant in Once Human. It might prove to be a useful companion!

Atomic Lighter Description in Once Human.

That’s everything you need to know about getting the Atomic Lighter Deviant in Once Human. Quite a long process compared to other Deviants. But we are sure it is worth it for the unique abilities it provides.

There are plenty of other unique Deviants up for grabs. Check out our How To Get Festering Gel Deviant Guide to add another to the collection. It is considered one of the best Deviants in the game currently!

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