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