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