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