I could only beat the first level before I bugged out of existence (I wish I screenshotted it), but what you have here is a fantastic looking game with some promise in it. I love just running around platforming at a high speed. But the world does feel empty with any NPCs or enemies, it just seems like if Fech is the only animal around. Other than that, it looks fantastic, plays fantastic, is fantastic. Just need to fix some bugs here and there.
And yeah, I later noticed that the demo without any contextualization does feel quite odd, but I'm really happy to hear you're liking the game so much! It will only get better!