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