Glad to be of help!
As I've said, the fact that there were no alternative endings did not detract from my overall experience. Alternative endings are hard to make, and most of the players won't see them anyway, so I definitely understand the impetus behind doing only one. But in this particular game, exploring the museum made me think that I could go for different artifacts, and that would reflect what kind of ending I would get (would I steal only what was stolen to make justice, or would I also go for more valuable objects just for money (and presumably get caught in the process).
Nevertheless, I think your game works perfectly fine and communicates clearly what it wants to say, which is more important in my eyes.