Atomic Heart's Polygon Testing Grounds combine many game mechanics to create a puzzling challenge. There are many Testing Grounds to discover and complete, each providing rare loot. This includes Testing Grounds 8, which may leave you wondering how to enter Polygon Testing Grounds 8 and complete it in Atomic Heart.
How to complete Testing Grounds 8 in Atomic Heart
You must first open the elevator to Testing Grounds 8. Climb onto the building where Testing Grounds 8 is located and use the device to hack into security cameras. Three round white objects must activate to open the door. Once you do, head into Polygon Testing Grounds 8. We were not able to see the third object, but just mashing the button while switching cameras worked.
Once in the facility, head to the right and then go right again. Go through the opening in the wall to find the first puzzle. Shok the ceiling magnets to lower the platform with handholds. Jump on and climb left. Jump to the handholds behind you. Then jump to the handholds to your left. Finally, climb to your right and jump on the blue platform behind you.
Climb up on the wall and Shok the ceiling. Walk to the other side, jump onto the central platform, then jump onto the blue platform. Climb up the red platform and then jump to the door. Go through the next door and grab the chest on the right to get the Zcezedochka-Extra Saw. Turn around and head to the staircase to the left of the first puzzle door.
Take a right and go past the blue and green truck to find an open door. Defeat the enemies that spawn to open the door on the far side. Climb up the containers to reach and go through this door. Go down the hall and take the first left to get the second chest. This contains the Fox-Blade and Dominator-Homing Bullets.
Continue to find yourself in a massive room. Jump across the platforms and go through the open door. You will find another chest, but the robot has been destroyed, and the treasure is gone. Turn around and go into the room with the polymer. Drop into the blue hole with arrows pointing at it.
Place five power orbs in the five slots above the door. Then, go into the room beside you and push the red button. Quickly run back and enter the door. On your left is a staircase; go through the door under this. Walk forward to the wooden ramp and grab the power orb on the platform in front of you. Place in the power slot up the stairs when you first come in.
Related: Atomic Heart – Polygon Testing Grounds 9 Walkthrough
Jump on the handholds that move in front of you and climb around to the gold machine hanging from the ceiling. Jump onto the platform and go up the wood ramp. Grab the power orb and place it in the power station beside you. Jump to the handholds that move in front of you. Use these to reach the wooden platform and then climb up the next set of handholds. Jump back and forth until you pull yourself up the yellow ledge.
Remove the power orb from the slot to move the platform you are standing on. Drop down the wooden platform to your right and quickly jump to the yellow handholds as the platform moves away. Climb to the left and jump on the handholds attached to the left wall. Pull yourself up the ledge on your right. Go through the door to find the last chest containing the MP-Reinforced Bolt Frame and Swede-Blade.
Step into the elevator shaft to your right and ride up and out of Testing Grounds 8. Some enemies will be waiting top side for you, so defeat them and go down the lower path and out the large door.
For more information on Atomic Heart, check out Atomic Heart – Polygon Testing Grounds 6 Walkthrough and Atomic Heart – Polygon Testing Grounds 2 Walkthrough on Pro Game Guides.
Justin has been diving into fantasy worlds since he can remember. He is a certified nerd who has a deep love of reading, writing, and hiking. He has been writing since his college days, but specifically in gaming for two years. His favorite games are The Legend of Zelda, Pokémon, Hollow Knight, Celeste, and Banjo Kazooie.