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