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.