Hey, I gave the game a play. I'll say you nailed the Zelda/horror vibe. I never played silent hill, but the world almost had an Elden Ring vibe, at least the prolog part which is what I played.
I played about 45 minutes, but didn't get too far because I had a lot of trouble with the initial platforming. I would say it would improve things to make the player's jump bigger, add some more coyote time, and maybe shorten some of the jumps. Also maybe make grabbing ledges more forgiving, or just have it always grab a ledge. I missed a lot of jumps that should have been easy, so however you can improve that, especially for the opening world, would be great.
I also was frustrated by the second puzzle where you have to put rocks down to rase the lever. When I first jumped on it, it didn't seem to move at all, so I didn't think it would work to put the stones there. I guess I should have known based on the rock pile, but I spent a lot of time searching around before trying again. Also, once I figured it out, i lost a crop of rocks because when the lever went down they fell.
One other piece that was a bit iffy is the camera when you get near walls. It tended to go wonky and sometimes made it hard to maneuver away.
And it seemed like a bug, but I couldn't crouch with ctrl (but ctrl worked for dropping rocks?). It didn't matter since I rolled to get under the branch, but I wanted to note it.
I'll say you've got a really great base in terms of a world and idea here, and I'm planning on playing more now that I have more of a hang of it. I also like that I think you had a secret door where I would need a bomb or something to get through, I love that kind of Metroidvania type world. I think for now focusing on getting the camera and controls really tight is where you would see the most benefit in my mind. Hope this helps, and let me know if you have any questions!