It's a creative use of the assets for sure. I wouldn't have expected such a game. The first few levels are a bit of an information overload, I think introducing the skeleton first is probably better, then the other stuff.
I'm not sure how exactly the portal sends back the skeleton, it was hard for me to wrap my head around it and aim him. I guess I expected it to work like breakout.
All in all it's a good jam entry.