Here is the full list of all 21 Boxes Inc achievements.
To throw a parcel in a pipe at a medium distance
Earn 500 dollars
Process 100 packages
Process correctly 10 erroneous parcels
To throw a parcel in a pipe at a small distance
Process 10 packages
First level is complite
Process the first package
Process 1000 packages
Process 10000 packages
Process correctly 10 packages in 60 second
Process correctly 20 packages in 60 second
Process correctly 30 packages in 60 second
To throw a parcel in a pipe at a large distance
Earn 650 dollars
Earn 800 dollars
Finish the game
100 unchecked parcels in warehouse
Process correctly 1000 erroneous parcels
300 unchecked parcels in warehouse
Process correctly 100 erroneous parcels