Collect the stars as fast as you can. Use the arrow keys to move and jump. If you press the down arrow key while in the air to go down faster. You can climb walls by pressing the up arrow key and moving in the direction of the wall. You can wall jump by climbing and then quickly while still holding the up arrow key switch to pressing the opposite arrow key. Don't get too close to the right wall because it will send you back to the other side.
