Aya Brea's outfits

Aya has 11 outfits right. Her casual outfit unlocked from the beginning. Aya can wear her White Eider probably later in the game. But how do you unlock the other outfits. Like Lighting. I heard you can unlock it using a cheats code, but where how and what do you do? Left4Deadseries FAN 15:55, February 20, 2011 (UTC)