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