Amazing atmosphere. The clunks of the controls, the puttering of the engine, the creaking of the metal cage; they all come together beautifully.
That said, I feel the gameplay needs balancing. I was overdriving the engine just for the sake of something to do. When the threat actually arrived, I had just pulled the lever to vent and stop the engine, so there was nothing I could and the moment fell flat. I'd already gotten bored of the mechanics by then, so I felt no motivation to try again.
You have a diamond in the rough, here. It just needs polishing. Considering you built this in 7 days for a game jam, that's honestly the best possible nitpick I could give you. I hope you keep working on this.