Here is the full list of all 17 The Gunk achievements worth 1,000 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox One.
Made one charge off a cliff
Made one charge into another
Graduated and saved the day
Scanned every scannable type of object
Crafted all upgrades
Clogged an unaware turret
Got out of the Gravelands
Found the garden
Blasted three to smithereens
Defeated the Charger
Cleared the Giant Gunk
Crafted five upgrades
Set up camp
Threw one on another
Scanned fifteen objects
Landed the Dust Bunny
Cleared the first gunk