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