Interesting idea! I liked the mechanic of flinging yourself using the mouse. It keeps things simple gameplay-wise, and we can focus on interacting with the environment. The animations help create more responsiveness in the game as well.
I didn't really know what I was supposed to be doing, so I just kept flinging myself until I saw some arrows, then I followed the arrows until I reached a portal. Was that right?
Also, I didn't get the bars in the upper left. Are they supposed to be health or something? Sometimes I would fling myself to the spinning spiky things and nothing happened, so I'm not sure if I wasn't supposed to be doing that or not.
Can't wait to play this again once it's more polished!