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