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.
80% of all archives found.
All weapons upgraded to the highest level.
Emil destroyed.
2B's secret discovered 10 times.
100 machine lifeforms destroyed by hacking.
50 machine lifeforms destroyed by remote control.
Achieve 9S's ending.
View the final credits.
All Pod programs obtained.
50 machine lifeforms destroyed with berserk mode.
Have your body collected.
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.
Watch 2B die.
Achieve ending B.
Any weapon upgraded to the highest level.
80% of all quests completed.
Any animal ridden for 5 kilometers.
1 hour played with 9S in a certain state.
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.
80% of all plug-in chips collected.
Complete the flooded city.
255 enemies destroyed using a flight unit.
The place of memories has been visited.
10 friendly machine lifeforms destroyed.
Have 100 bodies collected.
Emil's shop used for the first time.
All Pods found.
20 different kinds of fish caught.
Complete the forest castle.
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.