I dislike the way you made the caves for the way they look so "box" like. Sure, it's partly the tileset's fault but I believe with a little effort they could be made to look more natural. Look at what Blur did with the caves in Dawn of Combat, for example. I also dislike the fact that you used those sprite layer tiles in the background like that; it looks kinda nonsensical, especially what appears to be a floating gargoyle (?)

Despite that, there's something about those screens that catches my eye, although not really sure what it is.