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