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