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.
Achieve A2's ending.
View the final credits.
50 machine lifeforms destroyed with berserk mode.
Materials gathered at a hidden harvest point 10 times.
All Pods found.
Any animal ridden for 5 kilometers.
20 different kinds of fish caught.
10 friendly machine lifeforms destroyed.
2B's secret discovered 10 times.
1 hour played with 9S in a certain state.
Emil destroyed.
50 machine lifeforms destroyed by remote control.
100 machine lifeforms destroyed by hacking.
All Pods upgraded to the highest level.
All weapons upgraded to the highest level.
Any weapon upgraded to the highest level.
All Pod programs obtained.
80% of all unit data unlocked.
80% of all archives found.
80% of all quests completed.
The place of memories has been visited.
All endings achieved.
Achieve 9S'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.
At least 100,000 G in possession.
80% of all plug-in chips collected.
Have 100 bodies collected.
Emil's shop used for the first time.
Have your body collected.
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.
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.