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