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.
The place of memories has been visited.
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.
100 machine lifeforms destroyed by hacking.
Any weapon upgraded to the highest level.
Grant Pascal's final request.
Control A2 for the first time.
Watch 2B die.
Achieve ending B.
10 friendly machine lifeforms destroyed.
All Pods found.
Play your first hacking game.
Achieve ending A.
Complete the abandoned factory.
Complete the copied city.
Complete the flooded city.
255 enemies destroyed using a flight unit.
Emil's shop used for the first time.
Complete the forest castle.
Have your body collected.
At least 100,000 G in possession.
Complete the alien ship.
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.
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.
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.
2B's secret discovered 10 times.
1 hour played with 9S in a certain state.
Emil destroyed.
All endings achieved.