Thanks very much for the comments! I really appreciate the feedback.
The swarm is basically ripped from a "Boids" demo in the Procedural Toolkit Unity asset. I wanted to do something foreboding but active, and it feels a little cheap to me to repurpose a demo, but I think it's an OK effect when you tweak it a lot. It's actually a single mesh that gets updated partially every frame with the positions, rotations, etc. of a fraction of the boids. I'm hoping to expand on it in a new version but I'm not yet sure where to take it.
I wanted to spend a lot more time on the audio, too, but I know next to nothing about audio mixing etc., and I did the audio stuff at like midnight before the jam ended. That's something else I really want to revisit. I'd like to add effects to the different ruins. Footsteps was on my list, but I didn't find something i liked within the time limit.
Anyway, yes, I hope to update this again soon. Stay tuned!