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