Level F-5 is the fifth level of Sardine Can Levels. To unlock this level, you must collect all feathers in Red Planet.
This is a very confusing level. You often don't know which part should be start.
Fire the sardine can upwards, into the leftmost geyser. Unleash the Space Eagle just southwest of the central spacecraft-looking pile of blocks. You need quite a bit of luck and a 1-can clear, but this strategy is pretty consistent.
Send the sardine can in the southern of the western planet and it will be pulled by the gravitational field. The can will travel a very long, winding path across every geyser, settling along the eastern wall. While the initial shot has a bit of variation, a 1-can clear is far more common.