IS THAT A JOJO REFERENCE??? I found it really funny that that's why I understood the timestop mechanic, even without a timer. I heard the sound and when it unfroze I just thought to myself, "oh so its jojo rules huh".
In all seriousness though I think this is a really interesting idea, and with a little more polish you could make this into a really cool experience. My one critique is that the controls weren't told to you inside the game, I jumped right into it and I didn't even know what I was supposed to do until I read through most of the game's description.
Overall though you have a great idea here that I really hope you decide to develop further after the jam is over. (I'll be keeping an eye out in case you do) If you have time to, I would appreciate if you came and played our game as well!