1. Use the arrow keys to move. 2. Realize it never uses the "move 10 steps" block.
Thanks to my friend (@brainyman) for teaching me the trigonometry function used in this (I didn't make it). It's really amazing what you could do with this. For example, you could use scrolling variables instead of the X and Y. That means you can move more than left, right, up, and down in scrolling projects!