It's a good tech demo.
I really liked how from the main menu to the constant rain, dark colors and hooded figures all added to a constant atmosphere.
The response to the controls is nice. The character sticking out his hand when controlling the skeleton lets the player immediately know it's working.
I had a bug where the towns people would stand in front of there door, preventing me from talking to them again, as I kept opening and closing the door. The water ripple overlaps the sand when moving upwards out of the water, a minor problem that I believe you would have fixed if this was a end product.
Not using the standard strait health bar was a good choice, I could quickly glance up and see if I could summon the skeleton or was about to die.
The level design is really good, even with the random starting point there was always something intriguing nearby that would lead me back to the village.
Overall the game is really good and I look forward to see the games you make in the future.