okay now my experience:

first question: does this demo have an "end", like a banner sayin "Congrats" or something?
I killed that worm-lady-fusion but then i made no progress. I just wandered for 20 min without a goal and finally closed the game.

What i like is the general setting of the game. The desert feels really abadoned.
It´s a different scheme than todays games, which generally sets either in a city or in a jungle.
The voice acting could be better, but that´s nothing to worry about at the moment.
The jumping feels really wierd, i didn´t liked it the entire time i played the demo. Collision detection could be better at some parts of the game. Also there is a hovering tree btw, which i couldn´t take a picture of since i had no option to do so.
Besides that i really liked what i´ve seen so far!
Keep it up!