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