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