The "proper" contents you should expect within the Deluxe Edition, as specified by official Steam listings , are:
This specific "v2.0" build likely refers to a major milestone update in the game's development cycle, which often includes balance changes, bug fixes, or new gameplay features like the Springloaded or Double Dome updates seen in earlier versions. Dome.Keeper.Deluxe.Edition.v2.0-P2P.iso
: Includes the atmospheric game music in high-quality MP3 and lossless FLAC formats. Engineer Pack (Cosmetic) : The "proper" contents you should expect within the