2) Have your character rotate right when the right arrow key is pressed, and left when the left arrow key is pressed.
4) When the character passes the edge of the screen, have it appear on the opposite edge.
5) Every few seconds, have an object for your character to collect appear on the screen.
7) Create a score variable and have it increase every time you collect an object. Display the score variable on the screen.
8) Create obstacles for your character to avoid. Have them appear in set intervals of time. Have each obstacle be a random size.
9) Make the game stop if your character hits an obstacle and create a "Game Over" message.
10) Create a message that only stays visible for a few seconds that tells the player how to play the game.