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