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