Atomic Heart Testing Ground 6 Walkthrough and Puzzle Solutions

18 August 2026 | 71

Atomic Heart delivers a compelling alternate-history experience filled with intense combat and intricate environmental puzzles that challenge your problem-solving skills. Among the optional underground complexes scattered across Facility 3826, Testing Ground 6 stands out as a highly rewarding gauntlet featuring clever magnetic mechanics. Accessing and fully completing this optional bunker requires navigating a series of rotating platforms, hidden pathways, and locked valves to secure valuable weapon upgrades.

How to Enter Testing Ground 6

Before exploring the depths of this complex, you must first unlock the facility entrance located near the picturesque boat station area. Search for a nearby Volan interface tower, scale its structure, and interface with the security terminal to hijack the local camera system. From this elevated perspective, look across the water to spot a small concrete bunker and activate the remote door mechanism to open the path forward.

Once the heavy blast door slides open, enter the structure and locate the elevator shaft to descend safely into the subterranean laboratory facility. This zone serves as an excellent opportunity to gather resources and test your mental sharpness against automated security features. Navigating these puzzles systematically ensures that you can gather missing weapon components without taking unnecessary environmental damage.

Solving the Rotating Wheel and Platform Puzzles

The first primary challenge corridor presents a massive mechanical puzzle room centered around giant rotating wheels and magnetic platforms. To make your way across the cavernous gap, you must manipulate a central valve wheel that shifts the orientation of the geometric floor plates. Carefully spin the valve until a climbable vertical grid aligns perfectly with your position, allowing you to reach the higher ledge.

After scaling the initial wall, another valve terminal must be activated to shift the environment a second time. This unlocks a hidden corridor containing the bronze loot container, which rewards observant players with the Extended Magazine blueprint for your submachine gun. Be careful to check your surroundings constantly, as miscalculating a jump can result in a fatal drop back to the lower floor levels.

Navigating the Turbine Shaft and Drone Bay

Moving forward brings you into a massive, multi-tiered turbine room where industrial fans create strong vertical currents and moving machinery blocks the main path. Look closely at the ceiling structures to find nodes that respond directly to your Shok ability, which temporarily alters the configuration of the platforms. Timing your jumps through the rotating blades is critical for maintaining your health and progress.

This room also contains a hidden room holding the silver chest, which provides the colossus upgrade blueprint to enhance your melee weapon capabilities. Clear out any rogue flying drones that enter the airspace before attempting the final platforming sequence to avoid being knocked off into the abyss. Managing these robotic threats swiftly gives you the breathing room required to focus entirely on the environmental layout.

Unlocking the Final Gold Chest Rewards

The final puzzle chamber combines multiple mechanical elements, requiring you to climb through a maze of hanging storage containers and high metal gantries. Look for a small maintenance crawlspace hidden along the side walls to bypass the locked security gates. Dropping through this vent leads you directly to the secure terminal area where the final loot container awaits your discovery.

Opening the highly coveted gold chest rewards you with advanced weapon parts that significantly enhance your combat efficiency during the late-game campaign. Utilizing your personal Steam account allows you to track these unique collectible achievements and compare your survival strategies with a global community of players. After collecting all available blueprints, step into the nearby elevator to return to the surface world and continue your quest across the facility.