Here is the full list of all 11 Transmissions: Element 120 achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Find all journals.
Complete chapter 4.
Smash two striders with shipping containers.
Reunite two little gnomes.
Find a way to get the magnum revolver.
Find and decode all qr codes.
Complete chapter 3.
Cut a zombie in half with a large object.
Complete chapter 2.
Use a special weapon to gravity jump.
Complete chapter 1.