Here is the full list of all 15 The Signal State achievements.
Finish Act 1.
Complete the tutorial.
Finish Act 2.
Finish the story.
Complete all required and all optional puzzles.
Record a GIF.
Create an infinite loop.
Solve Optimized Signal Repeater in an extremely efficient manner.
Solve Power Regulator using a maximum of 1 VCA.
Solve Logic Test without any logic modules.
Solve Drone Pathfinder without using any Signal Delays.
Solve Drone Processor without using any Signal Delays.
Solve Radio Amplification Circuit without using any logic modules.
Solve Min and Max Redesign trivially.
Solve Signal Delay Implementation trivially.