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