The puzzle is pretty interesting, it took some thinking to figure out how to move so I don't keep dying.
Have you thought about showing how the enemies will move when you press a key? Right now it's a bit hard to remember all the movement rules. Maybe you could use a system where you press a key to select your movement direction, and it would show how the enemy reacts. Then you can either press enter to confirm, or choose another direction. Just an idea, I don't know if it makes sense :)