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