This stage consists only of one struggle in the cave (Kong vs. Snakes). There was no point of creating the map.
As I mentioned, Kong must eliminate snakes and there will be two types of them: smaller and bigger. Don't waste time on fighting with smaller ones - you can finish the level by getting rid of bigger opponents.
Enemies are attacking during the jump (vertical posture signalizes it, just like cobra). If you'll notice the threat, try to move aside or attack quicker.
The snake will fall down only when you catch him and hit on he ground (he should be weakened earlier).
Remember that you can turn on Kong's fury state at the beginning. It should shorten the fight significantly.
There will be some elements, which you can use to attack opponents from above (ledges and planted wall). Attacking from above is effective, so try them out.
If Kong will roar loud, then it's after the fight.