I agree that the music needs to be expanded on; piano seemed effective for a game like this, but I didn't have enough available time for serious final mix mastering. That would likely reduce the metallic feel quite a bit; as would extending the loop's material by about a minute or so and adding a little dampening.
I do intend to expand it; but first I'm working on a premium edition for another well-received game, "Six More Weeks of Winter". Might be as much as a couple of months, but hopefully just a few weeks. After that, I'll likely write up some proper dialogue and come back to this one. I feel like this version could be a bit longer, and have a more refined UI. Maybe some health powerups here and there, and some new enemy and NPC types?
Thanks for playing!