Use WASD or the arrow keys to move and jump. You've also got a bunch of unique skills:

- You can jump off walls or slide down them.

- If you run in a straight line you can build up speed and smash through gray walls.

- You can also smash through walls by falling for a long time.

- Turn around and use your shell to block incoming arrows.

Try to find the 7 secret eggs or set a new "speed run" record!