Here is the full list of all 9 Fractured Minds achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Step into the redzone three times in Chapter 5
Completed Chapter 6
Completed Chapter 5
Completed Chapter 4
See the thing in Chapter 4
Completed Chapter 3
Completed Chapter 2
Completed Chapter 1
Found 7 wrong keys in Chapter 2