I'm not sure if the multiplayer works, but otherwise, I think this is one of my best and most complicated projects! WASD or Arrows to move, Mouse-pointer to aim, Left-click to shoot. First to get to 20 wins.
If this server is full, or no one is online, try going on these servers: https://scratch.mit.edu/projects/392167131/ https://scratch.mit.edu/projects/395858711/