Thank you for the feedback! It's our first game so we kinda got hit by a lot of issues related to constraints + physics. Mostly been on that and had to scrap a boss fight.
As for the goal- it should say right on top of the screen what to do + game description. The spikes placement is deliberate so players would go around and look for them (The first level is straightforward with no obscuring objects).
Btw, if you pop out of the circle during the playthrough, we have a failsafe where you touch the spikes with demon and the circle reappears.