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