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