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