This is an incredibly ambitious project, especially for a game jam as short as this one, so I'm super impressed with how far you got with the project. This must've been a lot of work, even for a small team.
The aesthetics are especially cool. I've seen the "haunted PSX" thing before, but this is rather fresh take on it, with the deliberately low-poly models and all. I quite like it, this could become something very cool if you want to keep working on it.
Thanks for including a Linux build too, that's always nice to see.