No puzzles? No gameplay just a walking simulator with a story?

I actually played the demo early, devs sent me a key and I played it. A lot of it is Exploring, but you will also have some tools you use throughout the game. The Dialogue you choose also changes the game storyline and ending. You will have to find various items as well, it is an adventure type of game. It is not a FPS shooter with on going action at every moment.

The environment does look good. The devs call it "Firewatch in space on steroids".

I am hoping they will add some puzzles as well, I don't see why they won't in this genre.

Oh dear god. Not another pointless walking simulator, please...!