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