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