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
Bag Blisterz Booty	Bounty Blizterz Booty.
Clean the Water	Take out Looten Duke.
Dam Sekto!	Enter the Dam Facility.
Don't be talkin' 'bout ma mama	Take out Jo Mama.
Dumb it down	Rescue Eugene Ius.
Elevate yourself	Take out Gloktigi.
Get to 'Last Legs'	Take a boat from Bloody Bay and survive.
Go Organic	Take out Meagly McGraw.
Hideout Seek	Take out Packrat Palooka.
Mine your business!	Take out Xplosives McGee.
Now there's two?	Take out the two Gloktigi.
Regain that spring in your step	Reach Sekto Springs.
Smack down Sekto!	Defeat the corrupt Sekto.
Spank that booty! that booty!	Take out Boilz Booty.
Starting the Journey	Complete the Tutorial.
The Sleg Avenger!	Take out Lefty Lugnutz.
Wash my hands of this mess	Take out Filthy Hands Floyd.
Who ate all the Zapflies?	Take out Fatty McBoomBoom.
You know too much	Take out D. Caste Raider.
You scratch my back	Take out Elboze Freely.