by Dies irae World Emanation Project
@Andrew: You get the key from backerkit. If you still have your verification email from locking your pledge you can get to the confirmation page which has a link to get your digital rewards on it. If you don't still have your confirmation email, just create an account on backerkit with your kickstarter email and the project should automatically link to your new account.
Alright now lets get Silverio Vendetta and Silverio Trinity :)
I never got a steam key.