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