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