Hi! Thank you for the support and review, we really aprecciate it!
We have plans to expand the map and add/improve the mechanics of the game, and your feedback helps a lot, there is some issues like the fall of the map that you mecioned that we will work on the fix, the music for now was to create the horror atmosphere for the tunnel, but we will work to better integrate it with the lore and the game world.
We will work on a more complete game based on this one soon so stay tuned in our profile so you can get a preview for what's to come in a few months and thanks again for your comment!
-The Flying Dutchman Studios.