Add difficulty levels (beginner, intermediate, advanced, etc.)

[gitasong]

Add difficulty levels (beginner, intermediate, advanced, etc.), so beginners can play at a slower speed without getting killed immediately, and the real ninjas can thrash it out together. :)

[PepperAddict]

I think that's a great idea. Our focus should be on single player since our uniqueness is "offline first". Having different levels will also help those trying to learn the game as well.
+1 on this idea.