Select your player and help him to avoid the obstacles and do all tricks possible in the air.
Move the mouse to move to left/right; keep the left mouse button pressed to give power to the jump, and release it to jump. Use the Z-X-C-V keys for the tricks. Space bar to make a grind on the rail. Make sure you complete your tricks before you reach the water, and you finish the grind before the rail is finished, or you'll suffer a serious collision.