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