Thank you! I'm glad you liked it :)
Obscuring details (including the lack of details) from the camera was intentional as I wanted to create a dark an opressive atmosphere while using as little assets as possible. I tried to make the doors distinguishable with emissive yellow bars but I think they could have used more distinctive elements and maybe actual lights to guide the player. I also wanted to add a UI element to show when the player was in the door interaction zone but didn't have time to make it good.