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