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