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