What a wonderful game! I've finished the demo, but I'm pretty sure that I've missed some spots that I could unlock with the runes. Time to go for a 2nd playthrough :)

The mix of steampunk and dark fantasy works pretty well, and one can notice some hints of Dark Souls (the places to rest) and Thief, but it's really its own thing because of metroidvania powerups and fluid combat, which is already great for a demo!

Maybe the AI of some enemies (zombies) could be a little better (pathfinding), but no complaints from here; maybe it's by design.

I hope you can make this available for Early Access on Steam soon!