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