I've done a bit of research regarding the saving system of UnrealEd, and have not received any good news. Due to how the game operates and how it saves files a standard campaign is rather hard to implement. So with that, I think the best course of action is to move the game to Half Life 2.
Alongside that, I can say that the first chapter of Dust is fully written and designed. We have some concept art coming soon, mostly in character design. I've also had a chance to work with a highly talented musician who is working on a musical piece for the game.
So all in all, the game isn't dead. It's far from completion, but isn't dead. Thanks to all who have shown an interest in Dust!
Sincerely,
Michael DeLally/ThreeEyedShaman