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