To get the best weapon upgrades in Atomic Heart, you’ll have to complete optional dungeons called Testing Grounds (or Polygons, depending on the menu you’re exploring) — Testing Grounds are underground complexes packed with puzzles and enemies. The further you delve into these locations; the more weapon upgrades you’ll find. There are three unique reward chests in these facilities — bronze, silver and gold. Unlike regular blueprint chests, these chests always contain the same rewards every single time. And you can even track what rewards you’re looking for in the when upgrading from any NORA crafting menu.
These dungeons are tricky. Just unlocking the entrance can be difficult for players beginning their journey in the open-world exploration portion of the game. If you’re struggling to get into Testing Ground 1, or if you need help finding all the chests and solving all the puzzles, we’ve got a full guide below covering every aspect. You’ll finally be able to increase your shotgun’s ammo capacity or unlock powerful secondary attacks for your heavy melee weapon.
Located west of the monorail station in the main open-world zone, to the northwest of the arena, you’ll find Testing Ground 1. To access this area, you need to hijack a camera and use it to unlock the door to the blue mushroom bunker.
Take the elevator inside the bunker to reach the first test chamber. By completing this series of puzzles, you’ll unlock a powerful upgrade for the shotgun. Inside the bunker, you’ll learn this chamber’s gimmick — you can change the magnetic pull of the ceiling by zapping the batteries on the ceiling with [Shok]. Start by zapping the batteries through the broken ceiling panel, then zap the ceiling again to raise the metal wall.
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