Here is the full list of all 27 Parcel achievements.
Find the hidden easter egg.
Do everything else and ascend to greatness.
Complete all Basement levels.
Complete all Special Place levels.
Complete all the levels in the game.
Collect all Dataspheres written by Special Place users.
Collect all Dataspheres.
Complete all Common Place levels.
Collect all Dataspheres originating from Spectacle accounts.
Complete all Processor levels.
Unlock Shade.
Feel good for thinking you've saved humanity.
Play through the game without the fifth wheel.
Destroy what can be destroyed and complete marked levels.
Spare what is to be spared and complete marked levels.
Unlock Clobber.
Complete all Containment levels.
Complete 10 levels created by other users.
Create and share a level for others to play.
Complete all Greenhouse levels.
Unlock Porter.
Unlock Hackman.
Complete all Factory levels.
Complete all Ventilation levels.
Hackman did his best to prevent you from being able to do this. Do it anyway.
Unlock Magna.
Find the missing shipment.