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