I didn't like platformer parts too much, especially since dying makes you restart the whole level (very frustrating).
The main "selling point" of your game is clearly that you can move and carry your rocky pals, and so I would have expected more interactions in that sense (make them platform, make them tank hits etc...).
Nevertheless, I liked the story and the atmosphere and I think it has potential.
Seeing that you plan on continuing working on the game, I'm curious as to what direction it will take!