Here is the full list of all 47 NieR:Automata achievements. It takes around 50-60 hours to unlock all of the achievements on Windows.
Achieve 9S's ending.
Achieve A2's ending.
Watch the final moments of Devola and Popola.
80% of all unit data unlocked.
Stop all resource recovery units.
Grant Pascal's final request.
80% of all quests completed.
Control A2 for the first time.
Watch 2B die.
Achieve ending B.
Any weapon upgraded to the highest level.
100 machine lifeforms destroyed by hacking.
Have 100 bodies collected.
10 friendly machine lifeforms destroyed.
80% of all plug-in chips collected.
Play your first hacking game.
Achieve ending A.
Complete the abandoned factory.
Complete the copied city.
At least 100,000 G in possession.
Complete the flooded city.
255 enemies destroyed using a flight unit.
Emil's shop used for the first time.
Complete the forest castle.
Complete the alien ship.
Have your body collected.
Complete the amusement park ruins.
Complete the desert area.
Complete your first quest.
Arrive at the city ruins.
Stare into space from the Bunker.
View the final credits.
80% of all archives found.
All Pod programs obtained.
All weapons upgraded to the highest level.
All Pods upgraded to the highest level.
50 machine lifeforms destroyed by remote control.
50 machine lifeforms destroyed with berserk mode.
Materials gathered at a hidden harvest point 10 times.
All Pods found.
Any animal ridden for 5 kilometers.
20 different kinds of fish caught.
2B's secret discovered 10 times.
1 hour played with 9S in a certain state.
Emil destroyed.
All endings achieved.
The place of memories has been visited.