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