This looks like it could be awesome! I'm terrified of the networking stuff so great job on that! A mode to face an ai would be a great addition for a game jam, just in case there's no one online (my case lol)
Thanks for the idea! I was originally planning to make a gamemode in which you would survive against zombies, with upgrades, status and many things... I then realized I had no time, so I decided to stick with the online version.