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