An Actual Platformer

This is a platformer game. Please read directions below. 1) Arrow keys to move. (Jump is "up" key). Remember to double jump if needed! 1.5) You can also jump using the space key. 2) Jump onto platforms as all platforms are solid. 3) Make sure to touch checkpoints so if you die you can get back to them. 3.5) If you collide with spikes and water, you go back to the nearest checkpoint. 4) Collect as many coins on the way to the end. 5) Click "r" to restart. 6) Enjoy the game? Please comment and fol...