This is honestly one of the first games I played that made me ask "what's behind the door". A lot of games took the theme literally (like me), but this one I was actually spending resources to see if I could prepare better. That's really neat.
The art is absolutely fantastic, and this is the start of a really interesting game. I'd love to see a longer version. The only thing I'd mention is that there's a lot of reading. That's not necessarily a bad thing, and the speed up text button makes it smoother, but I can't help but wonder if there's a way to streamline the reading without sacrificing story.
All in all, this is a fantastic submission and a great game. Love your use of theme, great work!