Here is the full list of all 21 WASTED achievements.
Defeated Purifier Starr.
Defeated an S.O.B. Purifier.
Found the Alistair VI.
Wore all three types of fanny packs at the same time.
Got killed by a Mutapupa.
Finished the quest "In Dick's Shadow."
Witnessed an enemy mutation.
Killed someone while stuck in a bear trap.
Got a Hangover for the first time.
Got killed for the first time.
Welcome to the Western Wastes.
Defeated the Coyote.
Convinced the BEEZ to begin recruitment.
Convinced the BEEZ to start dating around.
Convinced the BEEZ to help themselves.
Sided with the New Skeleton Army.
Sided with the Syndicate of Buzzkills.
Sided with... uh...
Finished the game.
Got through an entire floor of the Cooler without alerting anyone.
Defeated Master Y.