Here is the full list of all 25 Unpacking achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Put an electronic item somewhere dangerous.
Built a tower out of baby blocks.
Unpacked 2018.
Flushed every toilet.
Unpacked 2015.
Found a place for every plant.
Put the tiger and pig side by side.
Unpacked 2013.
Put the cookie jar out of reach.
Wrote an equation with fridge magnets.
Set the time on the microwave.
Unpacked 2012.
Rescued a forgotten poster.
Unpacked 2010.
Placed all the coffee-making equipment on the counter.
Tidied up his underwear drawer.
Unpacked 2007.
Turned on a game console.
Found a head to wear the hat.
Unpacked 2004.
Made the mannequin dab.
Unpacked 1997.
Turned on a music player.
Found your camera.
Solved the cube.