Here is the full list of all 9 Unsolved Case achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Lose 100 balls
Complete Unsolved Case Playing as Old Dog
Find The Number of the Beast channel
Correctly tune the walkie-talkie
Complete Unsolved Case Playing as Ally
Complete the forklift maze
Enter the shipping container and get trapped
That's not how it works...
Direct the laser to the wrong goal