Here is the full list of all 14 Desert of Vice achievements.
Reach ending I.
Reach ending II.
Reach ending III.
Reach ending IV.
Reach ending V.
Reach ending VI.
Bring the shopkeeper blue cactus.
Bring the shopkeeper firewood.
Bring the shopkeeper postcards.
Take a bite of cactus.
Open the safe.
Lie to the sheriff.
Participate in local brawls on a regular basis.
Don't be too bright.