ACHIEVEMENT - HOW TO UNLOCK Just That Good (25 points) - Complete the single-player campaign on Hard mode. Revenge is Sweet (20 points) - Defeat Cesar. The Wrong Guy (10 points) - Defeat El Raton Scars From the Past (15 points) - Defeat Cassandra. Father Forgive Me… (20 points) - Defeat the Priest. The Meating (15 points) - Defeat the Butcher. Grindhouse (15 points) - Perform 100 chainsaw kills. Mow 'Em Down (15 points) - Take out 1000 enemies. Make a Name For Yourself (10 points) - Take out 100 enemies. Just Getting Started (5 points) - Take out 20 enemies. And It Continues (25 points) - Complete the single-player campaign on Normal mode. Backstory (25 points) - Complete the co-op campaign.
Unlock the following costumes by performing the corresponding tasks:
COSTUME - HOW TO UNLOCK Dance - Complete the single player campaign under the Normal difficulty. Gimp - Kill 500 creatures. Horror - Kill 100 enemies with a chainsaw. Mow 'em Down - Get 1,000 total kills. Red Pajamas - Perform a 150-hit combo Spartan - Complete the backstory. White Pajamas - Perform a 100-hit combo. Wildman - Complete the single player campaign under the Hard difficulty. Yellow Jump Suit - Kill 100 enemies.
Unlock the following concept art by performing the corresponding tasks:
CONCEPT ART - HOW TO UNLOCK Concept Art #1 - Get 100 shank kills. Concept Art #2 - Get 100 kills with the chains. Concept Art #3 - Get 100 kills with dual pistols. Concept Art #4 - Get 100 kills with the katana. Concept Art #5 - Get 100 kills with grenades. Concept Art #6 - Get 100 kills with the Uzi.