I admire the great effort you probably did put into this !
But i never liked Liberation, for me it was miles away from the first Captive. The "real" 3D added nothing to it, and it was very uggly in my opinion. I don't even call it a "Captive", from that one it only has the name.
I saw your "Let's play Black Crypt". this game was really awesome ! i completed it when i got it at the time it came out. I even remember the "Oak Raven" code you had to put in as copy protection, at half way of the game