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