Oh my god my hand so slippery, I feel like I'm playing in butter lol. Jokes aside, I can see the potential for this game, think about FPS game but after every time you shoot you got dizzy, turn around and your mouse movement will be this slippery then back to normal so you can't just spam clicking to shoot. Or make the heavier the weapon the slower you mouse movement is.
My input for you to do a game jam from my experience is try to scoop as small as you can then make the core game works, after that you can add feature and work from there. This is my third game jam that I'm participated too, and I have failed my second game jam because my scoop is too big, and I learn and fix it from there.