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