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.
View the final credits.
Achieve A2's ending.
Watch the final moments of Devola and Popola.
Stop all resource recovery units.
Grant Pascal's final request.
Any weapon upgraded to the highest level.
Control A2 for the first time.
Watch 2B die.
Achieve ending B.
Have your body collected.
At least 100,000 G in possession.
Play your first hacking game.
Achieve ending A.
Complete the abandoned factory.
Complete the copied city.
Emil's shop used for the first time.
Complete the flooded city.
255 enemies destroyed using a flight unit.
Complete the forest castle.
Complete the alien ship.
Complete the amusement park ruins.
10 friendly machine lifeforms destroyed.
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.
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.
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.