Complete the following tasks to unlock the corresponding achievement. To view your achievements and stats in Steam, select "Community", then "My profile", then "View all my games", then the game and view stats.

Achievement	How to unlock
A bittersweet reunion?	Get all the Mudokons in the level accounted for (before they end up getting slaughtered by sligs).
A Muddy Escape	Beat No Muds Land.
All Fueled Up	Beat the Fuel Fields.
Annoying Boils	Beat the Boiler Room.
Brewer's Yeesh	Beat Brewery to Be.
Cry me a River	Beat Dead River.
Don't snooze on the job	Complete the level.
Done with Docking	Beat The Loading Dock.
Driven Crazy	Beat Magog Motors.
Escape the Fortress	Escape the Fortress.
Fluoride Tanks	Complete the level.
Fuzzle Test Success!	Beat Fuzzle Test.
Great Egg-scape	Beat Labor Egg Storage.
I don't want no Scrubs..	Beat Flub Fuel's Scrub Pens.
Leave the Cave.	Exit Raisin's Cave.
Lulu will be pleased	Beat Splinterz Manufacturing.
Meep Harder	Beat the Meep Herder Village.
Only blood is drawn from these pens..	Beat the Mudokon Pens.
Reserved Row	Beat Reservoir Row.
Runner	Beat the Paramite Run.
Sloghut Survivor	Beat Sloghut 2813.
Spooced Out	Beat Spooce-Shrub Forest.
Spoocey!	Grab the first Spooce in the game.
Suite-ness	Beat Vykker Suites (and the game!).
Super Spoocey!	Collect 600 (un-regenerated) Spooces.
The shareholders will be unhappy	Beat the Flubo Executive Office.
Too much death for my liking..	Beat the Sloghut 1027.
Ultra Spoocey!	Collect 1250 (un-regenerated) Spooces.
Vat'll do it!	Beat the Hydroponic Vats.
Very Spoocey!	Collect 250 (un-regenerated) Spooces.