Use the scroll bar to see the entirety of this map.
After jumping over the first big gap, you will be attacked by a bouncing enemy. More will appear as you continue to the right. As you approach a floating platform, a new type of enemy will appear that performs loops in the air as it approaches. A combination of these enemies will appear as you approach the water. If you fall through any of these gaps, you will land in a cavern from which you must travel in either direction to escape and return to the map screen.
As you cross a long section of land before you reach the water, Bang will suddenly feel as though something is trying to get inside his head. It will appear to stop almost as soon as it starts. Once you approach the water, heat-seeking missiles will begin to appear. To cross the water, you have two choices. You can jump along the platforms positioned above the water, or you can simply dive in a swim across the water. The upper path can be slower than swimming, but you stand a better chance of neutralizing the missiles before they can hurt you, and there's a heart that you can collect along the way.
Either way, when you reach the opposite side, jump back out. The right side of this route is almost identical to the left side, containing gaps, looping enemies and bouncing enemies. Be aware that if you fall down here to the underground cavern, you will still be sent back to the original side that you entered from.