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