Here is the full list of all 19 7 Billion Humans achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
All levels complete. Congratulations.
Red path fully optimized.
Orange path fully optimized
Finish the Mom and Dad of Invention cutscene.
Finish the Morning Petroleum cutscene.
Blue path fully optimized.
Green path fully optimized.
Finish the Fitness Program cutscene.
A worker is shredded by a killbot.
A worker exploded.
A worker is a crushed by an appliance.
A worker is shredded by a shredder.
Your solution fails more than 50% of the time.
Solve any puzzle with at least 4x the number of seconds required by the speed challenge.
Finish the Intro to Morale Officers cutscene.
Solve any puzzle with at least 4x the number of commands required by the size challenge.
A worker fell into an infinite pit.
Listen to all worker thoughts in a level.
Finish the You're Hired! cutscene.