Polygons in Atomic Heart: how to find weapon upgrade blueprints

In Atomic Heart Landfills are optional secret areas where you can find ammo, resources, and weapon upgrade blueprints. Inside these testing grounds, you'll have to solve a variety of puzzles with magnetic coils, platforms, candles and valves, as well as fight against dangerous robots.

In this guide, we will tell you where you can find all these locations, how to unlock them, and exactly what schemes you can find in them. We will also provide links to a detailed walkthrough of all test areas. We add that, having passed absolutely all the polygons in the game, you will unlock the achievement "Sweep".

Where to find all polygons in Atomic Heart

There are 8 such locations in total, and you can get into them almost immediately after the open world becomes available to you. They are presented below in the same order that you will discover them as you progress through the story.

Polygon 1

Improvements:

• Ergonomic handle - for the "Fox" weapon.
• Expansive transducer - for PM weapons.
• Increased store - for weapons KS-23.

To get inside, you will have to first interact with the security terminal and open the entrance to the bunker using the camera. A complete sweep of the test site is covered in our separate guide.

Polygon 6

Improvements:

• Extended magazine - for PM weapons.
• Collimator - for weapons "Kalash".
• Electromagnetic emitter - for weapons "Electro".
• Ramming - for the weapon "Snowball".

To get inside, you will need to enter the security system and open the entrance to the bunker using the camera. A detailed walkthrough of the test site is presented in our separate guide.

Polygon 9

Improvements:

• Collimator - for weapons "KS-23".
• Pulse divider - for the Dominator weapon.
• Electromagnetic polarizer - for Kalash weapons.
• Ergonomic handle - for weapons "Pate".

Before you can get to this location, you will need to destroy the plants underground by heating four boilers. We have described how to do this in separate material. It also considered the cleanup of the test site.

Polygon 8

Improvements:

• Bottom Blade with Reflex Accelerator - for the Starlight weapon.
• Thermal imager - for PM weapons.
• Vortex converter - for the Dominator weapon.
• Block "Energy Vampire" - for the weapon "Electro".
• Nozzle made of polymer alloys - for weapons "Swede".

To penetrate this complex, you will first have to activate 3 sensors by interacting with the three Volan systems. We have indicated their location in separate article. The passage of the test zone is also presented there.

Polygon 10

Improvements:

• Enlarged store - for weapons "Kalash".
• Collimator - for PM weapons.
• Booby trap - for the weapon "Fortress".
• High Intensity Modulators - for the Dominator weapon.

You will need to first open the door to the bunker by entering the security system and activating a certain sensor using the camera. Then take the elevator and go down. A detailed walkthrough of the test area is presented in our separate guide.

Polygon 2

Improvements:

• Electromagnetic polarizer - for PM weapons.
• Expansive converter - for weapons KS-23.
• Thermal imager - for weapons "Kalash".
• Nozzle made of polymer alloys - for weapons "Snowball".

As usual, interact first with the Volan device and open the entrance to the bunker with a blue roof. After that, you can use the elevator and go down. IN separate guide We have provided information on the cleanup of this landfill.

Polygon 11

Improvements:

• Expansive converter - for weapons "Kalash".
• Thermal imager - for PM weapons.
• Buttstock with storage - for weapons KS-23.
• Guidance system - for weapons "Fortress".

First, you have to infiltrate the checkpoint using the "Vulture" mechanism and find the disk key there. After that, you will be able to unlock the entrance to the bunker and get into the elevator, which will take you to the test site. The passage of polygon 11 is presented in our separate guide.

Polygon 12

Improvements:

• Thermal sight - for weapons KS-23.
• Electrokinetic buttstock - for weapons "Kalash".
• Revolver loading unit - for the weapon "Fortress".
• Block "Energy Vampire" - for the weapon "Electro".
• Reflex blade - for weapons "Pate".

Here you just need to find a passage to a secret area, which is hidden in a rock near the sea coast. Get inside, take the elevator down and start solving puzzles. You can read the walkthrough in our separate material.

How to upgrade weapons in Atomic Heart

To improve the weapons found or created, you will need to use the Eleanor Station - red machine guns that are installed in all break rooms and are sometimes found in the open world. Go to the "Improvement" section, select the necessary weapon and start upgrading it.

Note that the recipes for most modules will be available to the player from the very beginning, so only a certain amount of certain resources will be needed to craft them. Other upgrades will be blocked until you find their blueprints. You just have to look for them in the above polygons.

Therefore, if you want to fully improve all the weapons you have, then you will have to visit every test site. However, to complete the game on a low or medium difficulty level, this is not necessary at all.