Some thoughts:
- Missing sound fx (picking up potion, killing enemies).
- Music is louder on the right side, for some reason.
- Inconsistent art style (detailed wizard, while everything else is low-res).
- Annoying to have to restart the first level from scratch if you fail the first platforming challenges, while you're getting used to the controls.
- The demo kinda just ends, and it takes like 3 minutes to beat.
Most of the art style is neat, and the character controls pretty well. There could be a decent game here, but its too early to tell.