I would suggest reducing the saturation of the skybox cuz it looks really unnatural when every object further away than 20 meters appears white/grey-ish and the sky is still colorful. Also you should rely more on the "show, don't tell" principle cuz quite some times I felt like the character said some really obvious things like "was that a sound above me?" where it'd be better to not have any dialogue and maybe just increase the volume of the sound so you're 100% certain the player notices it too. Mechanically the game works flawlessly and it looks clean too, it just wasn't too atmospheric to me personally. Still, I hope you continue to make games!