Here is the full list of all 11 Observation achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Reached Saturn, somehow
Gained access to Universal
Reached the Rescue Station
Broke the first law
Investigated the jettisoned module EAS-12
Remarked on your effigy
Found the alternate Emma on the alternate station
Found Emma's last message in her bunk.
All the worlds are yours...
Recovered and/or combined all Data Drops
Brought the new gift home...