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