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