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