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