Really cool concept. Great sound design. You really feel bad for the poor creature. I don't think I would be so invested, if the main character was a regular human. I thought that I would play for like an hour and switch to Cyberpunk, but I just couldn't stop. It's 1AM, 3 hours have passed. I died three times. Last time I almost reached the third stage. At least I understand now how fixing dislocations and shrapnels works. I'm not sure, what caused the last death, though. I suddenly started bleeding from my chest and head. I probably missed something due to the leg pain.
After I played I decided that you deserve at least some money for this. I know it's not much, but I hope it helps.
I hope this project gets a full version at some point in the future.
The only real problem I noticed, was trading. It took me a while to figure out, that I need to press T to drop/give the item to the other guy. Then, when I bought the item, the guy dropped it where he was sitting, which was behind a wall (not sure if he always sits inside of a closed capsule, or if it was random, because I met him only once). I had to dig through to pick the item up. In the meantime, the guy decided that the item laying on the ground is for him and took it back.
TLDR: Good game, even though it's just a demo. Lots of potential. I wish you all the best.