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