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.
1 hour played with 9S in a certain state.
2B's secret discovered 10 times.
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.
50 machine lifeforms destroyed by remote control.
80% of all archives found.
10 friendly machine lifeforms destroyed.
Achieve A2's ending.
View the final credits.
Achieve 9S'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.
Any weapon upgraded to the highest level.
Any animal ridden for 5 kilometers.
100 machine lifeforms destroyed by hacking.
At least 100,000 G in possession.
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.
Complete the flooded city.
255 enemies destroyed using a flight unit.
The place of memories has been visited.
80% of all plug-in chips collected.
20 different kinds of fish caught.
Emil's shop used for the first time.
Complete the forest castle.
All Pods found.
Complete the alien ship.
Have 100 bodies collected.
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.