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