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