Stuggernaut
Grandma's Chippy
Ditto for the former and latter of your choices. Watching the dev explain Ethan Carter, and it seems interesting. I don't see any combat but the world looks stunning. Transistor I'm thinking of buying just because I love the art.
I paid full price for Ethan Carter and was worth it (to me anyway).
No combat, just beautiful world, some fun puzzles and some great mechanics, and the story is fun too.
Definitely worth $6.79