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