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