I think the main issue could be that the game lacks a sense of direction, for example a clearer objective, but i don't necessarily think all that much needs to change, for example a tutorial or increased amounts of information (nametags and such) could very well be enough to vastly improve upon the experience.
Although i can image how to torturous it must be, participating in a game jam while your brain is barely awake, body riddled with countless bacteria and whatnot.
But at the end of the day, you managed to make a game and for what i know, that's all that matters.
Nice work, valiant effort indeed!