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