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