The Wrong Guy (Bronze)
Objective: Defeat El Raton

The Meating (Bronze)
Objective: Defeat The Butcher

Scars from the past (Bronze)
Objective: Defeat Cassandra

Revenge is Sweet (Bronze)
Objective: Defeat Cesar

Just getting started (Bronze)
Objective: Take out 20 enemies

Making a name for yourself (Bronze)
Objective: Take out 100 enemies

Grindhouse (Bronze)
Objective: 100 Chainsw kills

And it continues (Silver)
Objective: Complete Single Player Campaign on Normal Mode

Backstory (Silver)
Objective: Complete Co-op Campaign Mode

Father forgive me... (Silver)
Objective: Defeat The Priest

Mow 'em Down (Silver)
Objective: Take out 1000 enemies

I'm just that good (Gold)
Objective: Complete Single Player Campaign on Hard Mode