Wow, this looks so beautiful! *_* Sometimes the perspective makes it somewhat hard to see what's going on though when multiple sprites overlap. I think this could easily become a fun puzzle game if you add an undo-mechanic and an indicator for where each enemy will move the next turn. As of now it feels a bit random and a good score oftentimes only means you got a good starting layout.
Have you tried implementing a version where the number of eyes just limits the maximum range of motion btw? So that when you roll on a three, you could move 1, 2 or 3 tiles in that direction instead of always being bound to move the full three tiles. If you're going for a puzzle game that may make it too easy, but for a more casual/arcadey experience I think it might work out a little better.
Also really dig the idea of turning the dice into a spider - very cute concept! :)