Re: Battlefield Bad Company 2 Deluxe Edition

 It's the key that came with the disc. When I write it on the redeeming tab it says it is the Deluxe Edition; although it does not specify what's included.

 Edit: I checked it again and it clearly says Digital Deluxe Edition, so it must indeed include the Vietnam Expansion. 

 Thank you, I have no idea how I've missed that.