First things first - I commend your bravery, making a multiplayer game for SBIGJam! (did that myself back in 2021, so I know all too well how much of a pain in the arse Unity can be for multiplayer games)
But I will admit that there are some aspects of this game which just make it rather unfun to play.
Firstly - I’d strongly suggest putting an invisible wall around the playable area. It’s way too easy to accidentally yeet someone out of bounds, which, ofc, results in a softlock (and needing to close the whole game and start again).
Secondly - is it even possible to put out the fires? Just feels a bit discouraging trying to get rid of a fire in my way but there’s no indication that the fire extinguisher is actually doing anything.
Still, I appreciate the concept, and I genuinely am impressed to see that you got multiplayer working within the jam timeframe.