I have some delays on my demo release, because it is kind of a last release for the demo. There's a rare bug I hope to catch and fix before release. In the meantime I'm preparing the full version with all its features. I hope to have the demo out this weekend, and the full version the weekend after that. With a little luck that might happen ^^
I'll look into the unlit light detection for the guards as well. Thank you for letting me know.