Here is the full list of all 20 Vicious Attack Llama Apocalypse achievements.
Unlock your first weapon
Kill 30 llamas
Knock over 50 street-lights
Destroy 20 phone booths
Wash the camera 5 times
Extinguish 10 llamas that are on fire
Make 1000 ice cubes
Cause $100,000,000 of damage to the world
Clear 2 areas without using a weapon
Clear 10 sections without missing a shot
Get the framerate down to peasant-level
Unlock every perk
Destroy 200 magazine stands
Revive a friend
Unlock every weapon
Complete District 1
Complete District 2
Complete District 3
Kill ovar 9000 llamas
Kill the entire US & Canada llama population