I redid the dungeons and added new ones. They are now more detailed compared to the old one. I was also able to add more variety to the floors and walls, so each room looks significantly different. On the screenshot we have (from top left to bottom right) plains, desert valley, highland forest, and snow.

To see comparison screenshots of the old dungeons and the new ones, head on over to:

http://emmanuelsalvacruz.com/wp/?p=1019