For game players the episode codes appear mid way through the episodes.........

For the first 3 episodes the codes were

PARADISE - Patron Pass goodies
SHRILL - Shrill Grenades
FORGED -100 Ark Forge

Not sure if the first two codes will still work. I was told they only work for a week for that particular episdode of the TV show.

You can enter game codes here:

http://www.trionworlds.com/defiance/en/game/ego-codes/