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