Changing story production to do the inspired one

[The Rock Worm]

Since my upcoming story "Beneath the Ice--Chapter 1: The Ruins" is similar/inspired from Lovecraft's "At the Mountains of Madness", I've decided to shelve my story in favor of doing "At the Mountains of Madness". Or at least another side to it. I really love the story and have a neat idea on doing it.

Considering Dyer didn't have much action or puzzles for an Amnesia Custom Story, this one would follow Gedney. Gedney and a dog were missing from the camp that the Elder Things attacked early in the story. However, we don't truly know what Gedney did in that city. I purpose following him would give room for an exciting adventure.

Now a few things would have to be done to make this, if anyone wants to aid me please speak up or give advice. Below are key points for this story to be successful.

1: Now the textures for the city/pictographs are one that is a must.

2: At a minimum, we need a Shoggoth. Considering it's a protoplasmic creature not sure how this scary monster would be made. Depending on the story, not sure about the giant Albino Penguins. Elder Things would be good, as they are also after Gedney.

3: Considering the Shoggoth went after Penguins, Elder Things, and Humans, the typical enemy status wouldn't work. Penguins could be neutral, Elder Things as Enemy Grunts, and the Shoggoth a new enemy type; one that goes after everybody.

4: I'm still working on story, but it should be filled with puzzles; same/similar alien history seen by Dyer; and a chance for Gedney to find a way out/get help (in case people read the story).

Now I know the above would be tricky/difficult to make, but would result in a really great adventure set in one of Lovecraft's most well known stories.

Any thoughts in how to do this or who will help?