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