While exploring the open world of Atomic Heart players will find many testing grounds scattered across Facility 3826. These optional testing grounds are mini-dungeons filled with puzzles and valuable blueprints. The unique blueprints can be found in bronze, silver, and gold loot robots as players progress through the various test chambers. Blueprints allow players to upgrade weapons in specific ways at vending machines. Without these blueprints, many weapons and extra abilities cannot be used in Atomic Heart. One of the first testing grounds that players can enter is Testing Ground 1 located northeast of the train station. Follow this walkthrough to enter and complete the trials in Testing Ground 1.