Here is the full list of all 15 Obduction achievements. It takes around 10-12 hours to unlock all of the achievements on Windows.
Viewed an Easter Egg.
Returned to Earth.
Left the nest.
Destroyed the Bleeder in Hunrath.
Soria connected to the Heart.
Viewed Earth from Soria.
Kaptar connected to the Heart.
Destroyed the Box of Infinite Complexity.
Maray connected to the Heart.
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Approached an active Mofang WMD.
Found Farley's pod in the Silo.
Hunrath connected to the Heart.
Checked in with CW after turning on the power.
Redirected the water in Hunrath.