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