Great job with the demo so far! The art, animation and sound are all good imo.
I noticed one grammatical error and that's when the pixie says "Your trapped" when it should be "You're trapped".
My suggestions are to add a sound effect to go along with the characters' text chat and to have the pixie give periodic tips, especially when the player dies. I got stuck in an area where I kept falling to my death and couldn't progress any further.
Overall I'd say a very solid demo, especially for an alpha build. Keep up the good work!