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 weapons upgraded to the highest level.
All Pods upgraded to the highest level.
All Pod programs obtained.
2B's secret discovered 10 times.
20 different kinds of fish caught.
1 hour played with 9S in a certain state.
50 machine lifeforms destroyed by remote control.
80% of all archives found.
100 machine lifeforms destroyed by hacking.
Emil destroyed.
All Pods found.
50 machine lifeforms destroyed with berserk mode.
Achieve 9S's ending.
View the final credits.
10 friendly machine lifeforms destroyed.
80% of all quests completed.
The place of memories has been visited.
80% of all unit data unlocked.
Achieve A2's ending.
Have 100 bodies collected.
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.
80% of all plug-in chips collected.
Any animal ridden for 5 kilometers.
Any weapon upgraded to the highest level.
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.
Emil's shop used for the first time.
Complete the flooded city.
255 enemies destroyed using a flight unit.
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.