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