There are 12 achievements worth a total of 200 points
Complete the co-op campaign.
Complete the single player campaign on Normal mode.
Take out 20 enemies.
Take out 100 enemies.
Take out 1000 enemies.
Perform 100 chainsaw kills.
Defeat the Butcher.
Defeat the Priest.
Defeat Cassandra.
Defeat El Raton
Defeat Cesar.
Complete the single player campaign on Hard mode.