Here is the full list of all 21 WASTED achievements.
Finished the game.
Sided with the New Skeleton Army.
Convinced the BEEZ to start dating around.
Found the Alistair VI.
Defeated Master Y.
Defeated the Coyote.
Defeated Purifier Starr.
Defeated an S.O.B. Purifier.
Finished the quest "In Dick's Shadow."
Wore all three types of fanny packs at the same time.
Killed someone while stuck in a bear trap.
Got a Hangover for the first time.
Witnessed an enemy mutation.
Got killed for the first time.
Welcome to the Western Wastes.
Convinced the BEEZ to begin recruitment.
Convinced the BEEZ to help themselves.
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.