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.
Secret
Craft five upgrades
Craft all upgrades
Scan fifteen objects
Scan every scannable type of object
Throw one on another
Sneak up and clog
Make one charge off a cliff
Make one charge into another
Blast three to smithereens