In Rusty Racer the object of each level changes a bit with each progression. You'll start out needing to complete two back flips. Use the arrow keys to move around and to flip in the air. If you get flipped upside down, you can right yourself again by playing with the arrows. The idea is to gain speed and then in the air press left to back flip and right to front flip. There will be other goals as the levels progress and you are on a time limit so get to know your controls very well and don't be shy - you don't have a health meter and can take all the risks you want in Rusty Racer!