Arrow keys. Things you will need to know: Hold both left and right arrows to 'glide' down a hill. The ability to jump carries on from one one level. This means if you are on the ground when you touch the gray you can jump in mid-air in the next level.
The rectangle in the corner with colored shapes on it is your shape pad. Click on this to view the shapes you have unlocked. To unlock a shape finish a level that has the shape in it. Fourteen levels, let me know if I should make more. You go back one level if you die. Also added level zero and level negative one, if you can die on level one. Last level is not possible but I am working on it.